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      <title>Lớp LTN1,20719 - Lập trình Windown 1 (C#, vb.net) by Hiền Trần</title>
      <link>https://padlet.com/hient940923/45ljym0g8lvbas7c</link>
      <description>Bất luận tài tăng, tri thức hay gì chăng nữa nếu thiếu đi sự nhiệt tình thì chắc chắn không thể vẽ nên bức tranh hoàn hảo trong cuộc sống, sự nghiệp.</description>
      <language>en-us</language>
      <pubDate>2021-09-19 13:53:44 UTC</pubDate>
      <lastBuildDate>2025-10-25 23:29:26 UTC</lastBuildDate>
      <webMaster>hello@padlet.com</webMaster>
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      <item>
         <title>Cô giáo Trần Thị Hiền</title>
         <author>hient940923</author>
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         <pubDate>2021-09-19 14:04:36 UTC</pubDate>
         <guid>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1751749376</guid>
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      <item>
         <title>Các em hãy xem và nhớ nhé</title>
         <author>hient940923</author>
         <link>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1751794487</link>
         <description><![CDATA[]]></description>
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         <pubDate>2021-09-19 14:30:28 UTC</pubDate>
         <guid>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1751794487</guid>
      </item>
      <item>
         <title>Chương 1: Tổng quan</title>
         <author>hient940923</author>
         <link>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1751823905</link>
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         <pubDate>2021-09-19 14:47:38 UTC</pubDate>
         <guid>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1751823905</guid>
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      <item>
         <title>Chương 2: Cú pháp C#</title>
         <author>hient940923</author>
         <link>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1751832124</link>
         <description><![CDATA[]]></description>
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         <pubDate>2021-09-19 14:52:22 UTC</pubDate>
         <guid>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1751832124</guid>
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      <item>
         <title>Tải Visual Studio 2019</title>
         <author>hient940923</author>
         <link>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1751972530</link>
         <description><![CDATA[<div>Link download: https://visualstudio.microsoft.com/</div>]]></description>
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         <pubDate>2021-09-19 16:18:30 UTC</pubDate>
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      <item>
         <title>Hướng dẫn cài đặt</title>
         <author>hient940923</author>
         <link>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1751972878</link>
         <description><![CDATA[<div>https://www.youtube.com/watch?v=hDcbHZZXhmc</div>]]></description>
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         <pubDate>2021-09-19 16:18:43 UTC</pubDate>
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      <item>
         <title>File điểm danh hằng ngày</title>
         <author>hient940923</author>
         <link>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1752719662</link>
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         <pubDate>2021-09-20 02:22:07 UTC</pubDate>
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      </item>
      <item>
         <title>Những bạn đã cài đặt xong </title>
         <author>hient940923</author>
         <link>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1752750269</link>
         <description><![CDATA[<div>1. Phạm Văn Quang<br>2. Lê Ngọc Thanh<br>3.Phạm Văn Phong<br>4.Lê Nhựt Nam<br>5. VõThành Phú<br>6. Trịnh Bảo Đạt<br>7. Phan Ngọc Đức<br>8. Võ Trường Giang<br>9. Nguyễn Văn Phát<br>10. Nguyễn Việt Anh<br>11. Lê Thanh Sơn</div>]]></description>
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         <pubDate>2021-09-20 02:42:45 UTC</pubDate>
         <guid>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1752750269</guid>
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      <item>
         <title>Hướng dẫn tạo WindownForm cơ bản</title>
         <author>hient940923</author>
         <link>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1755975281</link>
         <description><![CDATA[]]></description>
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         <pubDate>2021-09-21 03:26:20 UTC</pubDate>
         <guid>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1755975281</guid>
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      <item>
         <title>Những bạn đã thiết kế xong Form cơ bản</title>
         <author>hient940923</author>
         <link>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1756035338</link>
         <description><![CDATA[<div>1. Phạm Văn Phong<br>2. Phạm Văn Quang<br>3. Trịnh Bảo Đạt<br>4. Lê Nhựt Nam<br>5. Lê Thanh Sơn</div>]]></description>
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         <pubDate>2021-09-21 04:01:07 UTC</pubDate>
         <guid>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1756035338</guid>
      </item>
      <item>
         <title>Những bạn xong bài 1.buổi 3</title>
         <author>hient940923</author>
         <link>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1758713549</link>
         <description><![CDATA[<div>1. Trịnh Bảo Đạt<br>2. Phạm Văn Quang<br>3. Phạm Văn Phong<br>4. Lê Nhựt Nam<br>5. Nguyễn Việt Anh<br>6. Lê Ngọc Thanh</div>]]></description>
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         <pubDate>2021-09-22 01:19:01 UTC</pubDate>
         <guid>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1758713549</guid>
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      <item>
         <title> Bài tập 1.B3</title>
         <author>hient940923</author>
         <link>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1758715199</link>
         <description><![CDATA[<div><strong>&nbsp;<br></strong><br></div><div><strong>Bài 1: Sử dụng Form và Button<br></strong><br></div><div>Thiết kế Form có hai nút lệnh có tên là &amp;Green và &amp;Yellow. Form có nút Min, Max Button.<br><br></div><div>Khi click vào nút lệnh Green, Form đổi màu nền thành màu Xanh (Green) và đổi tiêu đề của Form thành “Green Colour”<br><br></div><div>Khi click vào nút lệnh Yellow, Form đổi màu nền thành màu Vàng (Yellow) và đổi tiêu đề của Form thành “Yellow Colour”.<br><br></div><div>Hướng dẫn<br><br></div><div>B1. Tạo 2 Button<br><br></div><div>B2. Click vào 2 button để viết sự kiện</div><div><br>private void button1_Click(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; this.Text = "Green colour";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; this.BackColor = Color.Green;<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br><br>&nbsp; &nbsp; &nbsp; &nbsp; private void button2_Click(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; this.Text = "Yellow colour";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; this.BackColor = Color.Yellow;<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; }<br>}<br><br></div>]]></description>
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         <pubDate>2021-09-22 01:20:03 UTC</pubDate>
         <guid>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1758715199</guid>
      </item>
      <item>
         <title>Bài 2 buổi 3</title>
         <author>hient940923</author>
         <link>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1758769832</link>
         <description><![CDATA[<div><strong>Bài 2: Sử dụng Form, TextBox và Button<br></strong><br></div><div>Thiết kế Form có một TextBox để trắng, và 3 nút lệnh: Display, Clear, Exit.<br><br></div><div>Khi Click nút Display, hộp TextBox hiện lên câu: “Xin chào bạn đến với ngôn ngữ lập trình C#”<br><br></div><div>Click nút Clear, hộp TextBox bị xoá trắng<br><br></div><div>Click nút Exit để thoát khỏi chương trình.<br><br></div><div>Hướng dẫn<br><br></div><div>B1. Tạo TextBox, 3 Button<br><br></div><div>B2.&nbsp;<br><br></div><div>TextBox: Name bạn để là textBox_Ten cho tiện để mình xử lý code nhé.<br><br></div><div>Button1: + Text: Display<br><br></div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; + Name: btnDisplay<br><br></div><div>Button2: + Text: Clear<br><br></div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; + Name: btnClear<br><br></div><div>Button3: + Text: Exit<br><br></div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; + Name: btnExit<br><br></div><div>&nbsp;<br><br></div><div>B3: Click vào 3 button để viết sự kiện<br><br></div><div>btnDisplay:<br><br></div><div>textBox_Ten.text = “Chào mừng bạn đến với ngôn ngữ C#”;<br><br></div><div>btnClear:<br><br></div><div>textBox_Ten.Clear();<br><br></div><div>btnExit:<br><br></div><div>this.close();<br><br>Code:<br>&nbsp;private void btndisplay_Click(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; textBox1.Text = "Chào mừng bạn đến với ngôn ngữ C#";<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br><br>&nbsp; &nbsp; &nbsp; &nbsp; private void btnclear_Click(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; textBox1.Clear();<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br><br>&nbsp; &nbsp; &nbsp; &nbsp; private void btnexit_Click(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; this.Close();<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br><br></div>]]></description>
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         <pubDate>2021-09-22 01:53:24 UTC</pubDate>
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      <item>
         <title>Danh sách các bạn xong BT2.B3</title>
         <author>hient940923</author>
         <link>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1758791699</link>
         <description><![CDATA[]]></description>
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         <pubDate>2021-09-22 02:07:00 UTC</pubDate>
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      <item>
         <title>Bài 3 buổi 3</title>
         <author>hient940923</author>
         <link>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1758885144</link>
         <description><![CDATA[<div><strong>Bài 3: Sử dụng Form, TextBox, Label và Button<br></strong><br></div><div>Thiết kế Form có một TextBox (có thể gõ nhiều dòng), một Label, 1 nút lệnh View, 1 nút lệnh Exit để thực hiện công việc sau:<br><br></div><div>Ban đầu, nút View bị mờ, khi bắt đầu ấn phím bất kì vào TextBox, nút View mới được kích hoạt.<br><br></div><div>Sau khi nhập vào ô TextBox, click nút View, Label sẽ hiển thị nội dung của TextBox<br><br></div><div>Click nút Exit để thoát khỏi chương trình.<br><br></div><div>Hướng dẫn<br><br></div><div>B1. Tạo 1 TextBox, 2 button, 1 label<br><br></div><div>B2. Cài đặt các thuộc tính&nbsp;<br><br></div><div>&nbsp;| <strong>TexBox:</strong>&nbsp; Name: txthienthi Multiline: True CrolBars: Both |&nbsp; <strong>Button2: </strong>Name: btnexit&nbsp; <br>&nbsp;| <strong>Button1: </strong>Name: btnview Enabied: fale | <strong>Label:</strong> Name:lblhienthi Text: rỗng</div><div><br></div><div>B3. Viết code<br><br></div><div>Nút txthienthi<br><br></div><div>if(txthienthi.Text.Trim() !="")</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; btnview.Enabled = true;</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; btnview.Enabled = false;<br><br></div><div>Nút btnview<br><br></div><div>lblhienthi.Text = txthienthi.Text;<br><br></div><div>Nút btnexit:<br><br></div><div>this.Close();<br><br>Code:<br>private void txthienthi_TextChanged(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (txthienthi.Text.Trim() != "")<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; btnview.Enabled = true;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; btnview.Enabled = false;<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br><br>&nbsp; &nbsp; &nbsp; &nbsp; private void btnview_Click(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; lblhienthi.Text = txthienthi.Text;<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br><br>&nbsp; &nbsp; &nbsp; &nbsp; private void btnexit_Click(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; this.Close();<br>&nbsp; &nbsp; &nbsp; &nbsp; }</div>]]></description>
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         <pubDate>2021-09-22 03:04:29 UTC</pubDate>
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      <item>
         <title>Bài 4 buổi 3</title>
         <author>hient940923</author>
         <link>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1758899864</link>
         <description><![CDATA[<div><strong>Bài 4: Sử dụng Form, Label, Groupbox và RadioButton<br></strong><br></div><div>Thiết kế Form gồm 1 Label có dòng chữ “Thuộc tính MultiLine để làm gì?” và 4 RadioButton lần lượt có các tiêu đề sau: Chữ đậm, Chữ nghiêng, Xuống dòng, Chữ hoa. Các nút RadioButton được đặt trong một Groupbox có nhãn là “Trả lời”. Cuối cùng là một Label để hiển thị kết quả. Các công việc cần thực hiện:<br><br></div><div>Ban đầu Label hiển thị kết quả là rỗng.</div><div>Khi chọn RadioButton thứ 3, Label Kết quả hiển thị dòng chữ “Đúng”.</div><div>Khi chọn các RadioButton còn lại, Label Kết quả hiển thị dòng chữ “Sai”<br>&nbsp;<br>Code:<br>&nbsp;private void rbtchudam_CheckedChanged(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (rbtchudam.Checked)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; lblketqua.Text = "SAI";<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br><br>&nbsp; &nbsp; &nbsp; &nbsp; private void rbtxuongdong_CheckedChanged(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (rbtxuongdong.Checked)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; lblketqua.Text = "ĐÚNG";<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br><br>&nbsp; &nbsp; &nbsp; &nbsp; private void rbtchunghieng_CheckedChanged(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (rbtchunghieng.Checked)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; lblketqua.Text = "SAI";<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br><br>&nbsp; &nbsp; &nbsp; &nbsp; private void rbtchuhoa_CheckedChanged(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (rbtchuhoa.Checked)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; lblketqua.Text = "SAI";<br>&nbsp; &nbsp; &nbsp; &nbsp; }</div>]]></description>
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         <pubDate>2021-09-22 03:13:15 UTC</pubDate>
         <guid>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1758899864</guid>
      </item>
      <item>
         <title>Danh sách xong bài 3.b3</title>
         <author>hient940923</author>
         <link>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1758903993</link>
         <description><![CDATA[<div>1. Lê Thanh Sơn<br>2. Phạm Văn Phong<br>3. Nguyễn Việt Anh<br>4. Trịnh Bảo Đạt<br>5.Lê Nhựt Nam<br>6. Phạm Văn Quang</div>]]></description>
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         <pubDate>2021-09-22 03:15:44 UTC</pubDate>
         <guid>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1758903993</guid>
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      <item>
         <title>Bài 4 buổi 3</title>
         <author>hient940923</author>
         <link>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1758955582</link>
         <description><![CDATA[]]></description>
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         <pubDate>2021-09-22 03:47:24 UTC</pubDate>
         <guid>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1758955582</guid>
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      <item>
         <title>Bài tập buổi 4</title>
         <author></author>
         <link>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1761554169</link>
         <description><![CDATA[]]></description>
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         <pubDate>2021-09-23 01:24:21 UTC</pubDate>
         <guid>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1761554169</guid>
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      <item>
         <title>Bài 8 buổi 5</title>
         <author>hient940923</author>
         <link>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1764515013</link>
         <description><![CDATA[<div><strong>Bài 8: Sử dụng Form, TextBox, ComboBox và Button<br></strong><br></div><div>Thiết kế Form gồm có 1 TextBox điền Họ tên, 3 ComboBox có các Label đi kèm có nhãn: Ngày, Tháng, Năm<br><br></div><div>ComboBox Ngày nạp các giá trị từ 1 đến 31 (không cho nhập thêm dữ liệu)<br><br></div><div>ComboBox Tháng nạp các giá trị từ 1 đến 12 (không cho phép nhập thêm dữ liệu)<br><br></div><div>ComboBox Năm nạp các giá trị từ 1930 đến 2010 (cho phép nhập thêm dữ liệu)<br><br></div><div>Khi ấn nút lệnh Kiểm tra, nếu ngày tháng năm sinh là hợp lệ sẽ hiện ra MessageBox thông báo Họ tên và ngày sinh. Nếu dữ liệu ngày tháng không hợp lệ sẽ hiện ra MessageBox thông báo “Ngày sinh không hợp lệ!”<br><br></div><div>Hướng dẫn<br><br></div><div>B1. Tạo Form theo mẫu<br><br></div><div><br><br></div><div><strong>&nbsp;<br></strong><br></div><div><strong>B2: Viết Code<br></strong><br></div><div><strong>Cấu trúc rẽ nhánh:<br></strong><br></div><div>switch (&lt;biểu thức&gt;)<br><br></div><div>{<br><br></div><div>case &lt;giá trị thứ 1&gt;: &lt;câu lệnh thứ 1&gt;;<br><br></div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; break;<br><br></div><div>case &lt;giá trị thứ 2&gt;: &lt;câu lệnh thứ 2&gt;;<br><br></div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; break;<br><br></div><div>. . .<br><br></div><div>case &lt;giá trị thứ n&gt;: &lt;câu lệnh thứ n&gt;;<br><br></div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; break;<br><br></div><div>}<br><br></div><div>Trong đó:<br><br></div><ul><li>switch, case là từ khóa bắt buộc.</li><li>break là một lệnh nhảy<br>&nbsp;<ul><li>Ý nghĩa của nó là thoát ra khỏi cấu trúc, vòng lặp chứa nó (khái niệm về vòng lặp sẽ được trình bày ở bài <a href="https://www.howkteam.vn/redirect?Id=Y%2fHKZv6fbvNJnzXtx4Ic0vYlENyb60crXHoWTj9rzf6kfJk0HxkyeFybvLv3eNUB7V4KKQWDOguGdJL5hTFPbd1Ry9aBTJ3OPpB6ehmJIfLNW9c5hLbZfUNSi%2bjAIg6v">CẤU TRÚC LẶP GOTO TRONG C#</a> )</li></ul></li><li>&nbsp;<ul><li>Ngoài break ra vẫn còn lệnh nhảy khác như goto nhưng ít được sử dụng (chi tiết về lệnh goto sẽ được trình bày trong bài <a href="https://www.howkteam.vn/redirect?Id=Y%2fHKZv6fbvNJnzXtx4Ic0vYlENyb60crXHoWTj9rzf6kfJk0HxkyeFybvLv3eNUB7V4KKQWDOguGdJL5hTFPbd1Ry9aBTJ3OPpB6ehmJIfLNW9c5hLbZfUNSi%2bjAIg6v">CẤU TRÚC LẶP GOTO TRONG C#</a>).</li></ul></li><li>&nbsp;<ul><li>Vì trong cấu trúc switch. . . case chủ yếu chỉ sử dụng lệnh break nên mình cố tình để lệnh break vào trong cú pháp thay vì ghi chung chung là lệnh nhảy.</li></ul></li><li>&nbsp;</li><li>&lt;biểu thức&gt; phải là biểu thức trả về kết quả kiểu:<br>&nbsp;<ul><li>Số nguyên (int, long, byte, . . .)</li></ul></li><li>&nbsp;<ul><li>Ký tự hoặc chuỗi (char, string)</li></ul></li><li>&nbsp;<ul><li>Kiểu liệt kê (enum, sẽ được trình bày trong bài <a href="https://www.howkteam.vn/redirect?Id=Y%2fHKZv6fbvNJnzXtx4Ic0lthogs3xmFNd%2fmA%2beIi3HrLXkoJNxKQfs3CYsTGyVjjtHHfl099fWQZTHP6meB13bR5AIin4rifnjE%2fcCa%2b%2bAKDs85E0N%2fwUJr%2fjpo4wbbu">ENUM TRONG LẬP TRÌNH C#</a> )</li></ul></li><li>&nbsp;</li><li>&lt;giá trị thứ i&gt; với i = 1..n là giá trị muốn so sánh với giá trị của &lt;biểu thức&gt;.</li><li>&lt;câu lệnh thứ i&gt; với i = 1..n là câu lệnh muốn thực hiện khi &lt;giá trị thứ i&gt; tương ứng bằng với giá trị của &lt;biểu thức&gt;.</li></ul><div><strong>Ý nghĩa: </strong>Duyệt lần lượt từ trên xuống dưới và kiểm tra xem giá trị của &lt;biểu thức&gt; có bằng với &lt;giá trị thứ i&gt; đang xét hay không. Nếu bằng thì thực hiện &lt;câu lệnh thứ i&gt; tương ứng.<br><br></div><div><strong>Lưu ý:<br></strong><br></div><ul><li>&lt;giá trị thứ i&gt; phải có kiểu dữ liệu giống với kiểu dữ liệu của giá trị của biểu thức.</li><li>&lt;câu lệnh thứ i&gt; có thể gồm nhiều câu lệnh và không nhất thiết phải đặt trong cặp dấu ngoặc nhọn { } nhưng tốt hơn bạn nên đặt trong cặp dấu { } để code được rõ ràng hơn.</li><li>Nếu case đang xét không rỗng (có lệnh để thực hiện) thì bắt buộc phải có lệnh nhảy (cụ thể là lệnh break) sau đó.</li></ul><div>&nbsp;Code chính:<br>private void Form1_Load(object sender, EventArgs e)</div><div>&nbsp; &nbsp; &nbsp; &nbsp; {</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; for (int i = 1; i &lt;= 31; i++)</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; cbongay.Items.Add(i);</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; cbongay.SelectedIndex = 0;</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; for (int i = 1; i &lt;= 12; i++)</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; cbothang.Items.Add(i);</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; cbothang.SelectedIndex = 0;</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; for (int i = 1930; i &lt;= 2010; i++)</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; cbonam.Items.Add(i);</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; cbonam.SelectedIndex = 0;</div><div>&nbsp; &nbsp; &nbsp; &nbsp; }</div><div>&nbsp;</div><div>&nbsp; &nbsp; &nbsp; &nbsp; private void btnketqua_Click(object sender, EventArgs e)</div><div>&nbsp; &nbsp; &nbsp; &nbsp; {</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; //ngày sinh hợp lệ&nbsp;</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; //4,6,9,11: 30 ngày</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; //2 không nhuận:28 ngày</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; //còn lại:31 ngày</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; byte thang = Byte.Parse(cbothang.SelectedItem.ToString());</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; byte ngay = Byte.Parse(cbongay.SelectedItem.ToString());</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; int nam = Int16.Parse(cbonam.SelectedItem.ToString());</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; switch (thang)</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; case 4:</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; case 6:</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; case 9:</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; case 11:</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (ngay &gt; 30)</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; MessageBox.Show("Ngày sinh không hợp lệ");</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; MessageBox.Show(txthoten.Text + "sinh ngày:" + ngay + "/" + thang + "/" + nam);</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; break;</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; case 2:</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (((nam % 4 == 0) &amp;&amp; (nam % 100 != 0)) || (nam % 400 == 0))</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; //Đây là năm nhuận</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (ngay &gt; 29)</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; MessageBox.Show("Ngày sinh không hợp lệ");</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; MessageBox.Show(txthoten.Text + "sinh ngay:" + ngay + "/" + thang + "/" + nam);</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (ngay &gt; 28)</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; MessageBox.Show("Ngày không hợp lệ");</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; MessageBox.Show(txthoten.Text + "sinh ngay:" + ngay + "/" + thang + "/" + nam);</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; break;</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; default:</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (ngay &gt; 31)</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; MessageBox.Show("Ngày không hợp lệ");</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; MessageBox.Show(txthoten.Text + "sinh ngay:" + ngay + "/" + thang + "/" + nam);</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; break;</div><div>&nbsp;</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }</div><div>&nbsp; &nbsp; &nbsp; &nbsp; }</div><div>&nbsp; &nbsp; }</div><div>&nbsp;</div><div><br><br></div><div>&nbsp;<br><br></div>]]></description>
         <enclosure url="" />
         <pubDate>2021-09-24 01:42:49 UTC</pubDate>
         <guid>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1764515013</guid>
      </item>
      <item>
         <title>bài 8 buổi 5 (cách 2)</title>
         <author>vanphongdz435</author>
         <link>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1764518308</link>
         <description><![CDATA[<div>int ngay = int.Parse(cmbNgay.Text);<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; int thang = int.Parse(cmbThang.Text);<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; int nam = int.Parse(cmbNam.Text);<br><br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (thang == 4 || thang == 6 || thang == 9 || thang == 11)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (ngay &gt; 30)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; MessageBox.Show("Ngày Sinh Không Hợp Lệ");<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; MessageBox.Show("Thông Tin :\n" + txtHoTen.Text + " (" + ngay + "/" + thang + "/" + nam + ")");<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else if(thang==2)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if(nam%4==0 &amp;&amp; nam%100==1)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if(ngay&gt;29)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; MessageBox.Show("Ngày Sinh Không Hợp Lệ");<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; cmbNgay.Focus();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; MessageBox.Show("Thông Tin :\n" + txtHoTen.Text + " (" + ngay + "/" + thang + "/" + nam + ")");<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (ngay &gt; 28)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; MessageBox.Show("Ngày Sinh Không Hợp Lệ");<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; cmbNgay.Focus();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; MessageBox.Show("Thông Tin :\n" + txtHoTen.Text + " (" + ngay + "/" + thang + "/" + nam + ")");<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; MessageBox.Show("Thông Tin :\n" + txtHoTen.Text + " (" + ngay + "/" + thang + "/" + nam + ")");<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }</div>]]></description>
         <enclosure url="" />
         <pubDate>2021-09-24 01:44:18 UTC</pubDate>
         <guid>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1764518308</guid>
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      <item>
         <title>Bài 9 buổi 5</title>
         <author>vanphongdz435</author>
         <link>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1764654931</link>
         <description><![CDATA[<div>public Bth9_2()<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; InitializeComponent();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; this.ActiveControl = txtA;<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; private void txtA_KeyPress(object sender, KeyPressEventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (e.KeyChar == 13)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (txtA.Text.Trim() == "")<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; MessageBox.Show("Bạn Chưa NHập A");<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtA.Text = "";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtA.Focus();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtB.Focus();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else if(e.KeyChar&lt;48 || e.KeyChar&gt;57)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; MessageBox.Show("Nội Dung Bạn Nhâp Không Phải Số");<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; e.Handled = true;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtA.Text = "";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtA.Focus();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; private void txtB_KeyPress(object sender, KeyPressEventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (e.KeyChar == 13)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (txtB.Text.Trim() == "")<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; MessageBox.Show("Bạn Chưa NHập B");<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtB.Text = "";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtB.Focus();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; btnResult.Focus();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else if (e.KeyChar &lt; 48 || e.KeyChar &gt; 57)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; MessageBox.Show("Nội Dung Bạn Nhâp Không Phải Số");<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; e.Handled = true;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtB.Text = "";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtB.Focus();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; private void btnResult_Click(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; int a = int.Parse(txtA.Text);<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; int b = int.Parse(txtB.Text);<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtCong.Text = (a + b).ToString();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtTru.Text= (a - b).ToString();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtNhan.Text= (a * b).ToString();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtChia.Text= (a / b).ToString();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; btnReset.Focus();<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; private void btnReset_Click(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtA.Text = "";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtB.Text = "";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtCong.Text = "";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtTru.Text = "";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtNhan.Text = "";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtChia.Text = "";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtA.Focus();<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; private void btnExit_Click(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Close();<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; }</div>]]></description>
         <enclosure url="" />
         <pubDate>2021-09-24 02:45:55 UTC</pubDate>
         <guid>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1764654931</guid>
      </item>
      <item>
         <title>bài 10 form 1</title>
         <author>vanphongdz435</author>
         <link>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1764678640</link>
         <description><![CDATA[<div>FrmDanhNhap danhNhap;<br>&nbsp; &nbsp; &nbsp; &nbsp; public Bth10()<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; InitializeComponent();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; this.ActiveControl = txtUser;<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; private void txtUser_KeyPress(object sender, KeyPressEventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if(e.KeyChar==13)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if(txtUser.Text.Trim()=="")<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; MessageBox.Show("Bạn Chưa Nhập User");<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtPass.Focus();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; private void txtPass_KeyPress(object sender, KeyPressEventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (e.KeyChar == 13)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (txtPass.Text.Trim() == "")<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; MessageBox.Show("Bạn Chưa Nhập User");<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; btnOk.Focus();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; private void btnOk_Click(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (txtUser.Text == "admin")<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (txtPass.Text == "123")<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; danhNhap = new FrmDanhNhap(txtUser.Text);<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; danhNhap.ShowDialog();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; MessageBox.Show("Sai Mật Khẩu");<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtPass.Text = "";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtPass.Focus();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else if(txtUser.Text=="user")<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if(txtPass.Text=="456")<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; danhNhap = new FrmDanhNhap(txtUser.Text);<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; danhNhap.ShowDialog();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; MessageBox.Show("Sai Mật Khẩu");<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtPass.Text = "";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtPass.Focus();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; MessageBox.Show("Tên User Không Đúng");<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtUser.Text = "";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtUser.Focus();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; }</div>]]></description>
         <enclosure url="" />
         <pubDate>2021-09-24 02:57:08 UTC</pubDate>
         <guid>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1764678640</guid>
      </item>
      <item>
         <title>bài 10 form 2</title>
         <author>vanphongdz435</author>
         <link>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1764679551</link>
         <description><![CDATA[<div>string name = "";<br>&nbsp; &nbsp; &nbsp; &nbsp; public FrmDanhNhap(string userName)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; InitializeComponent();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; name = userName;<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; private void FrmDanhNhap_Load(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if(name=="user")<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; grbColor.Visible = false;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; private void cxbBold_CheckedChanged(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if(cxbBold.Checked==true)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtNoiDung.Font = new Font(txtNoiDung.Font, FontStyle.Bold);<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtNoiDung.Font = new Font(txtNoiDung.Font, FontStyle.Regular);<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; private void cxbItali_CheckedChanged(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (cxbItali.Checked == true)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtNoiDung.Font = new Font(txtNoiDung.Font, FontStyle.Italic);<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtNoiDung.Font = new Font(txtNoiDung.Font, FontStyle.Regular);<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br><br>&nbsp; &nbsp; &nbsp; &nbsp; private void cxbBlue_CheckedChanged(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (cxbBlue.Checked == true)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtNoiDung.ForeColor = Color.Blue;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtNoiDung.ForeColor = Color.Black;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; private void cxbRed_CheckedChanged(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (cxbRed.Checked == true)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtNoiDung.ForeColor = Color.Red;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtNoiDung.ForeColor = Color.Black;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; private void cxbGreen_CheckedChanged(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (cxbGreen.Checked == true)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtNoiDung.ForeColor = Color.Green;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtNoiDung.ForeColor = Color.Black;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; private void cxbLine_CheckedChanged(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (cxbLine.Checked == true)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtNoiDung.Font = new Font(txtNoiDung.Font, FontStyle.Underline);<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtNoiDung.Font = new Font(txtNoiDung.Font, FontStyle.Regular);<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; }</div>]]></description>
         <enclosure url="" />
         <pubDate>2021-09-24 02:57:33 UTC</pubDate>
         <guid>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1764679551</guid>
      </item>
      <item>
         <title>Nhóm 1: Tháng sinh 1,2,3</title>
         <author>hient940923</author>
         <link>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1772837359</link>
         <description><![CDATA[<div>&nbsp;1. Thiều Trung&nbsp; Chiến<br>&nbsp;2. Phan Ngọc &nbsp; Đức: 8<br>&nbsp;3. Lê Thị Thu&nbsp; Hiền<br>&nbsp;4. Phạm Suối&nbsp; Tiên:<br>&nbsp;5. Hà Thị Trang<br>&nbsp;6. Võ Đình&nbsp; Tuấn: 8<br>&nbsp;7. Võ Văn&nbsp; Ý<br>&nbsp;8. Võ Thành&nbsp; Phú</div>]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1341143403/193d33a354ca1b669ea69de43105c7cb/B1.jpg" />
         <pubDate>2021-09-28 01:03:44 UTC</pubDate>
         <guid>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1772837359</guid>
      </item>
      <item>
         <title>Nhóm 2: Tháng sinh 4,5</title>
         <author>hient940923</author>
         <link>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1772838106</link>
         <description><![CDATA[<div>&nbsp;1. Nguyễn Việt&nbsp; Anh: 9<br>&nbsp;2.Đinh Thiên&nbsp; Bảo: 7<br>3. Nguyễn Trần Trường&nbsp; Giang: 7<br>4.Đào Duy&nbsp; Luân: <br>5. Trương Hạo&nbsp; Nam: 6<br>6. Nguyễn Minh&nbsp;Quân: 6<br>7. Huỳnh Minh&nbsp;Tân: 6<br>8. Lê Nhựt&nbsp; Nam: 10<br>9. Phạm Văn&nbsp;Quang:  9</div>]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1341143403/653ffe895becf38ef9ed5f963e8452c8/B5.jpg" />
         <pubDate>2021-09-28 01:04:04 UTC</pubDate>
         <guid>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1772838106</guid>
      </item>
      <item>
         <title>Nhóm 3: Tháng sinh 6,7,8</title>
         <author>hient940923</author>
         <link>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1772839160</link>
         <description><![CDATA[<div>&nbsp;1. Lê Thị Vân Anh: 7<br>&nbsp;2.Trần Minh&nbsp; Hậu: 6<br>&nbsp;3. Lê Âu Minh Hiếu: 7<br>&nbsp;4. Trần Anh Qúi: 6<br>&nbsp;5. Lê Thanh&nbsp; Sơn: 10<br>&nbsp;6. Nguyễn Khánh Tâm:&nbsp;<br>&nbsp;7. Lê Ngọc Thanh: 7<br>&nbsp;8. Nguyễn Hoàng Hải&nbsp; Triều: 6</div>]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1341143403/296d18f4b37f8d7ff7e857cab76d8cd0/B3.jpg" />
         <pubDate>2021-09-28 01:04:30 UTC</pubDate>
         <guid>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1772839160</guid>
      </item>
      <item>
         <title>Nhóm 4: Tháng sinh 9,10 </title>
         <author>hient940923</author>
         <link>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1772840620</link>
         <description><![CDATA[<div>&nbsp;1.Trịnh Bảo Đạt:&nbsp; 9<br>&nbsp;2.Nguyễn Chí&nbsp; Dũng: 9<br>&nbsp;3.Trần Minh Hoàng: 6<br>&nbsp;4.Võ Thanh&nbsp; Khang: 6<br>&nbsp;5.Phạm Văn&nbsp; Phong: 10 (cộng điểm)<br>&nbsp;6.Nguyễn Tấn&nbsp; Phúc:&nbsp;<br>&nbsp;7.Hoàng Thu&nbsp; Trang: 6<br>8. Hà Văn&nbsp; Hoàng: 9<br>9.Nguyễn Xuân Trường: 6</div>]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1341143403/72ad3d53b81f15f9d3385055235c89ac/B10.jpg" />
         <pubDate>2021-09-28 01:05:07 UTC</pubDate>
         <guid>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1772840620</guid>
      </item>
      <item>
         <title>Nhóm 5: Tháng sinh 11,12</title>
         <author>hient940923</author>
         <link>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1772841148</link>
         <description><![CDATA[<div>&nbsp;1.Trần Văn Chiến: Cách ly<br>2. Nguyễn Thùy Dung: 6<br>3.Hoàng Xuân&nbsp; Hòa: 6 &nbsp;<br>4.Quách Thành Long: 6<br>5.Trần Hồ Phúc&nbsp; Nguyên: 9<br>6.Kiều Thị Huyền&nbsp; Nhi: 6<br>7.Nguyễn Văn&nbsp; Phát: 9<br>8.Lý Minh&nbsp; Triệu: 6<br>10. Đào Duy Luân: 9</div>]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1341143403/051764640d9010f0ca1b7788bb7652ce/B2.jpg" />
         <pubDate>2021-09-28 01:05:20 UTC</pubDate>
         <guid>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1772841148</guid>
      </item>
      <item>
         <title>Trang web tham khảo</title>
         <author>hient940923</author>
         <link>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1772912398</link>
         <description><![CDATA[<div>https://www.c10mt.com/2012/09/lap-trinh-truc-quan-c-windows-forms.html</div>]]></description>
         <enclosure url="https://www.c10mt.com/2012/09/lap-trinh-truc-quan-c-windows-forms.html" />
         <pubDate>2021-09-28 01:31:31 UTC</pubDate>
         <guid>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1772912398</guid>
      </item>
      <item>
         <title>nhóm 4 bài 10 </title>
         <author>vanphongdz435</author>
         <link>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1773165601</link>
         <description><![CDATA[<div>code phần form chính&nbsp;<br>public FrmNhapSoNguyen nhapSo = new FrmNhapSoNguyen();<br>&nbsp; &nbsp; &nbsp; &nbsp; List&lt;int&gt; cacSo = new List&lt;int&gt;();<br>&nbsp; &nbsp; &nbsp; &nbsp;&nbsp;<br>&nbsp; &nbsp; &nbsp; &nbsp; public FrmDaySoNguyenVaTinhToan()<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; InitializeComponent();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; nhapSo.nhap += NhapSo_nhap;<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; private void btnNhap_Click(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; nhapSo.ShowDialog();<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; private void NhapSo_nhap(int n)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; cacSo.Add(n);<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; int tong = 0;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtNoiDung.Text = "";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; for(int i=0;i&lt;cacSo.Count;i++)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtNoiDung.Text += cacSo[i].ToString() + " ";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; tong += cacSo[i];<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtTong.Text = tong.ToString();<br><br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; //Kiểm Tra Chẵn Lẻ<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; int tongLe = 0;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; int tongChan = 0;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; for (int i = 0; i &lt; cacSo.Count; i++)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (cacSo[i] % 2 == 0)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; tongChan += cacSo[i];<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; tongLe += cacSo[i];<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtTongChan.Text = tongChan.ToString();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtTongLe.Text = tongLe.ToString();<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; private void btnReset_Click(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; cacSo.Clear();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtNoiDung.Text = "";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtTong.Text = "";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtTongChan.Text = "";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtTongLe.Text = "";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; btnNhap.Focus();<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; private void btnExit_Click(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; DialogResult dl;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; dl = MessageBox.Show("Bạn Có Chắc Muốn Thoát", "Thông Báo", MessageBoxButtons.YesNo, MessageBoxIcon.Question);<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if(dl==DialogResult.Yes)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Close();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br><br>code phần form con<br>public delegate void soNhap(int n);<br>&nbsp; &nbsp; &nbsp; &nbsp; public event soNhap nhap;<br>&nbsp; &nbsp; &nbsp; &nbsp; int n=0;<br>&nbsp; &nbsp; &nbsp; &nbsp; public FrmNhapSoNguyen()<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; InitializeComponent();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; this.ActiveControl = txtSoNguyen;<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; private void btnExit_Click(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; this.Close();<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; private void btnOK_Click(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; try<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; n = int.Parse(txtSoNguyen.Text);<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; nhap(n);<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; this.Close();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; catch<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; MessageBox.Show("Lỗi Chương Trình");<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtSoNguyen.Text = "";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtSoNguyen.Focus();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; private void txtSoNguyen_KeyPress(object sender, KeyPressEventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if(e.KeyChar==13)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if(txtSoNguyen.Text.Trim()=="")<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; MessageBox.Show("Bạn Chưa Nhập Nội Dung");<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtSoNguyen.Text = "";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtSoNguyen.Focus();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; btnOK.Focus();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else if((e.KeyChar&lt;48 || e.KeyChar&gt;57) &amp;&amp; e.KeyChar!=127)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; MessageBox.Show("Bạn Phải Nhập Số");<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; e.Handled = true;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtSoNguyen.Text = "";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtSoNguyen.Focus();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; private void FrmNhapSoNguyen_Load(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; this.ActiveControl = txtSoNguyen;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtSoNguyen.Text = "";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtSoNguyen.Focus();<br>&nbsp; &nbsp; &nbsp; &nbsp; }</div>]]></description>
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         <pubDate>2021-09-28 03:11:20 UTC</pubDate>
         <guid>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1773165601</guid>
      </item>
      <item>
         <title></title>
         <author></author>
         <link>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1773211046</link>
         <description><![CDATA[<div>namespace bài<br>{<br>&nbsp; &nbsp; public partial class Form1 : Form<br>&nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; public Form1()<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; InitializeComponent();<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br><br>&nbsp; &nbsp; &nbsp; &nbsp; private void button1_Click(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; lbHienThi.Text = cbxChon.SelectedItem.ToString();<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br><br>&nbsp; &nbsp; &nbsp; &nbsp; private void btnThoat_Click(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; this.Close();<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br><br>&nbsp; &nbsp; &nbsp; &nbsp; private void btnReset_Click(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; this.lbHienThi.ResetText();<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br><br>&nbsp; &nbsp; &nbsp; &nbsp; private void richTextBox1_TextChanged(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br><br>&nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; }<br>}<br><br><br></div>]]></description>
         <enclosure url="" />
         <pubDate>2021-09-28 03:30:39 UTC</pubDate>
         <guid>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1773211046</guid>
      </item>
      <item>
         <title>Bài nhóm 5 Bài 2</title>
         <author>vanphat1232003</author>
         <link>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1773229099</link>
         <description><![CDATA[<div>using System;<br>using System.Collections.Generic;<br>using System.ComponentModel;<br>using System.Data;<br>using System.Drawing;<br>using System.Linq;<br>using System.Text;<br>using System.Threading.Tasks;<br>using System.Windows.Forms;<br><br>namespace Bài_nhóm<br>{<br>&nbsp; &nbsp; public partial class Form1 : Form<br>&nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; public Form1()<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; InitializeComponent();<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br><br>&nbsp; &nbsp; &nbsp; &nbsp; private void Form1_Load(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; for (int i = 1; i &lt;= 31; i++)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; cbNgay.Items.Add(i);<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; cbNgay.SelectedIndex = 0;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; for (int i = 1; i &lt;= 12; i++)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; cbThang.Items.Add(i);<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; cbThang.SelectedIndex = 0;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; for (int i = 1950; i &lt;= 2021; i++)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; cbNam.Items.Add(i);<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; cbNam.SelectedIndex = 0;<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br><br>&nbsp; &nbsp; &nbsp; &nbsp; private void btnXem_Click(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtKetqua.Text = txtHovaten.Text + "\r\n"<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;+ cbNgay.Text + "/" + cbThang.Text + "/" + cbNam.Text + "\r\n"<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;+ txtSothich.Text;&nbsp; &nbsp;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; byte thang = Byte.Parse(cbThang.SelectedItem.ToString());<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; byte ngay = Byte.Parse(cbNgay.SelectedItem.ToString());<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; int nam = Int16.Parse(cbNam.SelectedItem.ToString());<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; switch (thang)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; case 4:<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; case 6:<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; case 9:<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; case 11:<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (ngay &gt; 30)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; MessageBox.Show("Ngày sinh không hợp lệ");<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; break;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; case 2:<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (((nam % 4 == 0) &amp;&amp; (nam % 100 != 0)) || (nam % 400 == 0))<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; //Đây là năm nhuận<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (ngay &gt; 29)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; MessageBox.Show("Ngày sinh không hợp lệ");<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (ngay &gt; 28)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; MessageBox.Show("Ngày không hợp lệ");<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; break;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; default:<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (ngay &gt; 31)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; MessageBox.Show("Ngày không hợp lệ");<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; break;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br><br>&nbsp; &nbsp; &nbsp; &nbsp; private void btnThoat_Click(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; this.Close();<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; }<br>}</div>]]></description>
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         <pubDate>2021-09-28 03:38:23 UTC</pubDate>
         <guid>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1773229099</guid>
      </item>
      <item>
         <title>Nhóm 2 Bài 5</title>
         <author></author>
         <link>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1773240039</link>
         <description><![CDATA[<div>using System;<br>using System.Collections.Generic;<br>using System.ComponentModel;<br>using System.Data;<br>using System.Drawing;<br>using System.Linq;<br>using System.Text;<br>using System.Threading.Tasks;<br>using System.Windows.Forms;<br><br>namespace BT_Thuc_Hanh<br>{<br>&nbsp; &nbsp; public partial class Form1 : Form<br>&nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; public Form1()<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; InitializeComponent();<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br><br>&nbsp; &nbsp; &nbsp; &nbsp; private void rdoptbac1_CheckedChanged(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtc.Enabled = false;<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br><br>&nbsp; &nbsp; &nbsp; &nbsp; private void Form1_Load(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; rdoptbac1.Checked = true;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtc.Enabled = false;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtkq.Enabled = false;<br><br>&nbsp; &nbsp; &nbsp; &nbsp; }<br><br>&nbsp; &nbsp; &nbsp; &nbsp; private void rdoptbac2_CheckedChanged(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtc.Enabled = true;<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br><br>&nbsp; &nbsp; &nbsp; &nbsp; private void btnThoat_Click(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; this.Close();<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br><br>&nbsp; &nbsp; &nbsp; &nbsp; public static string giaiptbac1(float a,float b)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; string kq = " ";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (a == 0)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (b == 0)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; kq = "PT có vô số nghiệm";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; kq = "PT vô nghiệm";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; kq = "pt có nghiệm \r\n\t x=" + (-b / a).ToString();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; return kq;<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; private void btnGiai_Click(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; string kq = " ";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; float a, b, c;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (string.IsNullOrEmpty(txta.Text) || string.IsNullOrEmpty(txtb.Text))<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (rdoptbac2.Checked)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (string.IsNullOrEmpty(txtc.Text))<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; MessageBox.Show("Bạn chưa nhập đủ a,b,c");<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; MessageBox.Show("Bạn chưa nhập đủ a,b");<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else if (rdoptbac1.Checked)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (!float.TryParse(txta.Text, out a) || !float.TryParse(txtb.Text, out b))<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; MessageBox.Show("a hoặc b không phải là số");<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; kq = giaiptbac1(a, b);<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; float delta;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (!float.TryParse(txta.Text, out a)||!float.TryParse(txtb.Text, out b)||!float.TryParse(txtc.Text, out c))<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; MessageBox.Show("a,b hoặc c không phải là số");<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else if (a==0)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;if (MessageBox.Show("a=0, pt trở thành pt bậc 1,bạn có muốn giải ?","Thông báo",MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; kq = giaiptbac1(b, c);<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txta.Clear();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txta.Focus();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; delta = (b * b) - 4 * a * c;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if(delta &lt; 0)<br>kq = "pt vô nghiệm";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else if (delta &gt; 0)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; kq = "pt có 2 nghiệm phân biệt:\r\n";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; kq += "\t x1=" + (Math.Round((Math.Sqrt(delta) - b) / (2 * a), 2)).ToString() +"\r\n";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; kq += "\t x2=" + (Math.Round((-Math.Sqrt(delta)- b) / (2 * a), 2)).ToString();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; kq = " Pt có nghiệm kép";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; kq += "\t x1=x2="+(-b/(2*a)).ToString();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }&nbsp; &nbsp;&nbsp;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }&nbsp; &nbsp;&nbsp;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtkq.Text = kq;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp;<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; }</div>]]></description>
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         <pubDate>2021-09-28 03:43:13 UTC</pubDate>
         <guid>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1773240039</guid>
      </item>
      <item>
         <title>Nhóm 3 Bài 3</title>
         <author>lengocthanh280819</author>
         <link>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1773248099</link>
         <description><![CDATA[<div>namespace bài<br>{<br>&nbsp; &nbsp; public partial class Form1 : Form<br>&nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; public Form1()<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; InitializeComponent();<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br><br>&nbsp; &nbsp; &nbsp; &nbsp; private void button1_Click(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; lbHienThi.Text = cbxChon.SelectedItem.ToString();<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br><br>&nbsp; &nbsp; &nbsp; &nbsp; private void btnThoat_Click(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; this.Close();<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br><br>&nbsp; &nbsp; &nbsp; &nbsp; private void btnReset_Click(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; this.lbHienThi.ResetText();<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br><br>&nbsp; &nbsp; &nbsp; &nbsp; private void richTextBox1_TextChanged(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br><br>&nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; }<br>}</div><div><br></div><div><br></div><div><br></div><div><br></div><div><br></div><div><br></div><div><br></div><div><br></div><div><br></div><div><br></div><div><br></div><div><br></div><div>10:32</div><div><br></div><div><br></div><div><br></div><div><br></div><div><br></div><div><br></div><div><br></div><div><br></div><div><br></div><div><br></div><div><br><br></div>]]></description>
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         <pubDate>2021-09-28 03:46:51 UTC</pubDate>
         <guid>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1773248099</guid>
      </item>
      <item>
         <title>Bài nhóm 3</title>
         <author></author>
         <link>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1773328974</link>
         <description><![CDATA[<div>namespace bài<br>{<br>&nbsp; &nbsp; public partial class Form1 : Form<br>&nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; bool taodai = false;<br><br>&nbsp; &nbsp; &nbsp; &nbsp; public Form1()<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br><br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; InitializeComponent();<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br><br>&nbsp; &nbsp; &nbsp; &nbsp; private void button1_Click(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if(taodai == true)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; lbHienThi.Text = cbxChon.SelectedItem.ToString();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }&nbsp; &nbsp;&nbsp;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; MessageBox.Show("Bạn hãy chọn lại!");<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }&nbsp; &nbsp;&nbsp;<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br><br>&nbsp; &nbsp; &nbsp; &nbsp; private void btnThoat_Click(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; this.Close();<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br><br>&nbsp; &nbsp; &nbsp; &nbsp; private void btnReset_Click(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; this.lbHienThi.ResetText();<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br><br>&nbsp; &nbsp; &nbsp; &nbsp; private void richTextBox1_TextChanged(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br><br>&nbsp; &nbsp; &nbsp; &nbsp; }<br><br>&nbsp; &nbsp; &nbsp; &nbsp; private void Form1_Load(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br><br>&nbsp; &nbsp; &nbsp; &nbsp; }<br><br>&nbsp; &nbsp; &nbsp; &nbsp; private void richTextBox2_TextChanged(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br><br>&nbsp; &nbsp; &nbsp; &nbsp; }<br><br>&nbsp; &nbsp; &nbsp; &nbsp; private void cbxChon_SelectedIndexChanged(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; taodai = true;<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; }<br>}</div>]]></description>
         <enclosure url="" />
         <pubDate>2021-09-28 04:26:58 UTC</pubDate>
         <guid>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1773328974</guid>
      </item>
      <item>
         <title>nhóm 1 </title>
         <author>ducp09840</author>
         <link>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1776285117</link>
         <description><![CDATA[<div>private void btdangnhap_Click(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (this.khungdangnhap.Text == "phanduc" &amp;&amp; this.khungmatkhau.Text == "456")<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; MessageBox.Show("Bạn đã đăng nhập thành công");<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; MessageBox.Show("Bạn vui lòng nhập lại");<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; this.khungdangnhap.Focus();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br><br>&nbsp; &nbsp; &nbsp; &nbsp; private void btthoat_Click(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; DialogResult thongbao;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; thongbao = (MessageBox.Show("Bạn có muốn thoát ?", "chú ý", MessageBoxButtons.YesNo, MessageBoxIcon.Warning));<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (thongbao == DialogResult.Yes)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Application.Exit();<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; }<br>}<br><br></div>]]></description>
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         <pubDate>2021-09-29 00:37:27 UTC</pubDate>
         <guid>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1776285117</guid>
      </item>
      <item>
         <title>Nhóm 1  đã trình bày</title>
         <author>hient940923</author>
         <link>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1776302064</link>
         <description><![CDATA[<div>&nbsp; | Phan Ngọc&nbsp; | Đức 5<br>&nbsp;| Trần Hồ Phúc&nbsp; | Nguyên 5<br>&nbsp;| Lê Thanh&nbsp; | Sơn: thuyết trình&nbsp;8<br>&nbsp;| Hà Thị&nbsp; | Trang 5<br>&nbsp;| Võ Văn&nbsp; | Ý <br>&nbsp;| Võ Thành&nbsp; | Phú 5</div>]]></description>
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         <pubDate>2021-09-29 00:44:10 UTC</pubDate>
         <guid>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1776302064</guid>
      </item>
      <item>
         <title>Nhóm 2 đã trình bày</title>
         <author>hient940923</author>
         <link>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1776303319</link>
         <description><![CDATA[<div>&nbsp; | Hoàng Xuân&nbsp; | Hòa<br>&nbsp;| Phạm Văn&nbsp; | Phong: thuyết trình<br>&nbsp;| Nguyễn Minh&nbsp; | Quân<br>&nbsp;| Hoàng Thu&nbsp; | Trang<br>&nbsp;| Lý Minh&nbsp; | Triệu<br>&nbsp; | Phạm Suối&nbsp; | Tiên</div>]]></description>
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         <pubDate>2021-09-29 00:44:43 UTC</pubDate>
         <guid>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1776303319</guid>
      </item>
      <item>
         <title>Nhóm 3 đã trình bày</title>
         <author>hient940923</author>
         <link>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1776454162</link>
         <description><![CDATA[<div>&nbsp; | Nguyễn Việt&nbsp; | Anh: thuyết trình<br>&nbsp;| Đinh Thiên&nbsp; | Bảo<br>&nbsp;| Thiều Trung&nbsp; | Chiến<br>&nbsp;| Nguyễn Khánh&nbsp; | Tâm<br>&nbsp;| Nguyễn Xuân&nbsp; | Trường<br>&nbsp;&nbsp;</div>]]></description>
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         <pubDate>2021-09-29 01:43:16 UTC</pubDate>
         <guid>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1776454162</guid>
      </item>
      <item>
         <title>Nhóm 4 đã trình bày</title>
         <author>hient940923</author>
         <link>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1776456752</link>
         <description><![CDATA[<div>&nbsp; | Lê Thị Vân&nbsp; | Anh<br>&nbsp;| Đào Duy&nbsp; | Luân<br>&nbsp;| Nguyễn Tấn&nbsp; | Phúc<br>&nbsp;| Huỳnh Minh&nbsp; | Tân<br>&nbsp;| Lê Ngọc&nbsp; | Thanh: thuyết trình<br>&nbsp;| Phạm Văn&nbsp; | Quang</div>]]></description>
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         <pubDate>2021-09-29 01:44:19 UTC</pubDate>
         <guid>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1776456752</guid>
      </item>
      <item>
         <title>Nhóm 5 đã trình bày</title>
         <author>hient940923</author>
         <link>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1776460630</link>
         <description><![CDATA[<div>&nbsp; | Trịnh Bảo&nbsp; | Đạt: thuyết trình<br>&nbsp;| Nguyễn Thùy&nbsp; | Dung<br>&nbsp;| Trần Minh&nbsp; | Hoàng<br>&nbsp;| Võ Thanh&nbsp; | Khang<br>&nbsp;| Quách Thành&nbsp; | Long<br>&nbsp;| Kiều Thị Huyền&nbsp; | Nhi<br>&nbsp;</div>]]></description>
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         <pubDate>2021-09-29 01:45:55 UTC</pubDate>
         <guid>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1776460630</guid>
      </item>
      <item>
         <title>Nhóm 6 Đã trình bày</title>
         <author>hient940923</author>
         <link>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1776462044</link>
         <description><![CDATA[<div>&nbsp; | Trần Minh&nbsp; | Hậu<br>&nbsp;| Lê Thị Thu&nbsp; | Hiền<br>&nbsp;| Lê Âu Minh&nbsp; | Hiếu<br>&nbsp;| Trần Anh&nbsp; | Qúi<br>&nbsp;| Nguyễn Hoàng Hải&nbsp; | Triều<br>&nbsp;| Nguyễn Văn&nbsp; | Phát: thuyết trình<br><br></div>]]></description>
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         <pubDate>2021-09-29 01:46:27 UTC</pubDate>
         <guid>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1776462044</guid>
      </item>
      <item>
         <title>Nhóm7 Đã trình bày</title>
         <author>hient940923</author>
         <link>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1776463777</link>
         <description><![CDATA[<div>&nbsp; | Nguyễn Trần Trường&nbsp; | Giang 6<br>&nbsp;| Trương Hạo&nbsp; | Nam 6<br>&nbsp;| Võ Đình&nbsp; | Tuấn 7<br>&nbsp;| Hà Văn&nbsp; | Hoàng 7<br>&nbsp; | Nguyễn Chí&nbsp; | Dũng 7<br>| Lê Nhựt&nbsp; | Nam: thuyết trình 8</div>]]></description>
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         <pubDate>2021-09-29 01:47:09 UTC</pubDate>
         <guid>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1776463777</guid>
      </item>
      <item>
         <title>THAM KHẢO</title>
         <author>hient940923</author>
         <link>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1776522076</link>
         <description><![CDATA[<div>https://www.c10mt.com/2012/09/lap-trinh-truc-quan-c-windows-forms.html</div>]]></description>
         <enclosure url="https://www.c10mt.com/2012/09/lap-trinh-truc-quan-c-windows-forms.html" />
         <pubDate>2021-09-29 02:08:40 UTC</pubDate>
         <guid>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1776522076</guid>
      </item>
      <item>
         <title>Bài 29 nhóm 6</title>
         <author>vanphat1232003</author>
         <link>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1776691093</link>
         <description><![CDATA[<div>using System;<br>using System.Collections.Generic;<br>using System.ComponentModel;<br>using System.Data;<br>using System.Drawing;<br>using System.Linq;<br>using System.Text;<br>using System.Threading.Tasks;<br>using System.Windows.Forms;<br><br>namespace bài_nhóm_2<br>{<br>&nbsp; &nbsp; public partial class Form1 : Form<br>&nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; public Form1()<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; InitializeComponent();<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br><br>&nbsp; &nbsp; &nbsp; &nbsp; private void radioButton3_CheckedChanged(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtKetqua.ForeColor = Color.Green;<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br><br>&nbsp; &nbsp; &nbsp; &nbsp; private void label4_Click(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br><br>&nbsp; &nbsp; &nbsp; &nbsp; }<br><br>&nbsp; &nbsp; &nbsp; &nbsp; private void btnReset_Click(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtNhap.ResetText();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtKetqua.ResetText();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtKetqua.ForeColor = Color.Black;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; rdoAutocolor.Checked = false;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; rdoDo.Checked = false;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; rdoXanhduong.Checked = false;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; rdoXanhla.Checked = false;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; cbDam.Checked = false;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; cbNghieng.Checked = false;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; cbGachchan.Checked = false;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; cbDamghieng.Checked = false;<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br><br>&nbsp; &nbsp; &nbsp; &nbsp; private void txtNhap_TextChanged(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtKetqua.Text = txtNhap.Text;<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br><br>&nbsp; &nbsp; &nbsp; &nbsp; private void rdoAutocolor_CheckedChanged(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Random tamga = new Random();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtKetqua.ForeColor = Color.FromArgb(tamga.Next(255), tamga.Next(255), tamga.Next(255));<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br><br>&nbsp; &nbsp; &nbsp; &nbsp; private void rdoDo_CheckedChanged(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtKetqua.ForeColor = Color.Red;<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br><br>&nbsp; &nbsp; &nbsp; &nbsp; private void rdoXanhduong_CheckedChanged(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtKetqua.ForeColor = Color.Blue;<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br><br>&nbsp; &nbsp; &nbsp; &nbsp; private void cbDam_CheckedChanged(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (cbDam.Checked == true)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtKetqua.Font = new Font(txtKetqua.Font, FontStyle.Bold);<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtKetqua.Font = new Font(txtKetqua.Font, FontStyle.Regular);<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br><br>&nbsp; &nbsp; &nbsp; &nbsp; private void cbNghieng_CheckedChanged(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (cbNghieng.Checked == true)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtKetqua.Font = new Font(txtKetqua.Font, FontStyle.Italic);<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtKetqua.Font = new Font(txtKetqua.Font, FontStyle.Regular);<br><br>&nbsp; &nbsp; &nbsp; &nbsp; }<br><br>&nbsp; &nbsp; &nbsp; &nbsp; private void cbGachchan_CheckedChanged(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (cbGachchan.Checked == true)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtKetqua.Font = new Font(txtKetqua.Font, FontStyle.Underline);<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtKetqua.Font = new Font(txtKetqua.Font, FontStyle.Regular);<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br><br>&nbsp; &nbsp; &nbsp; &nbsp; private void cbDamghieng_CheckedChanged(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (cbDamghieng.Checked == true)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtKetqua.Font = new Font(txtKetqua.Font, FontStyle.Bold | FontStyle.Italic);<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtKetqua.Font = new Font(txtKetqua.Font, FontStyle.Regular);<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br><br>&nbsp; &nbsp; &nbsp; &nbsp; private void btnThoat_Click(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; this.Close();<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; }<br>}<br><br></div>]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1355715479/1e45c399b0c7a9843cf2048a9dd366b5/Screenshot__553_.png" />
         <pubDate>2021-09-29 03:10:57 UTC</pubDate>
         <guid>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1776691093</guid>
      </item>
      <item>
         <title>Bài Nhóm 2 </title>
         <author>vanphongdz435</author>
         <link>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1776711552</link>
         <description><![CDATA[<div>public FrmXepLoaiHocLuc()<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; InitializeComponent();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; this.ActiveControl = txtNhap;<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; private void txtNhap_KeyPress(object sender, KeyPressEventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if(e.KeyChar==13)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if(txtNhap.Text.Trim()=="")<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; MessageBox.Show("Bạn Chưa Nhập Tên");<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtNhap.Text = "";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtNhap.Focus();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtSever.Focus();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; private void txtSever_KeyPress(object sender, KeyPressEventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (e.KeyChar == 13)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (txtSever.Text.Trim() == "")<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; MessageBox.Show("Bạn Chưa Nhập Nội Dung");<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtSever.Text = "";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtSever.Focus();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtLTTQ.Focus();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else if(e.KeyChar&lt;48||e.KeyChar&gt;57)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; MessageBox.Show("Điểm Bạn Nhập Bắt Buộc Là Số");<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; e.Handled = true;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtSever.Focus();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }&nbsp; &nbsp;&nbsp;<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; private void txtLTTQ_KeyPress(object sender, KeyPressEventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (e.KeyChar == 13)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (txtLTTQ.Text.Trim() == "")<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; MessageBox.Show("Bạn Chưa Nhập Nội Dung");<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtLTTQ.Text = "";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtLTTQ.Focus();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtQT.Focus();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else if (e.KeyChar &lt; 48 || e.KeyChar &gt; 57)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; MessageBox.Show("Điểm Bạn Nhập Bắt Buộc Là Số");<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; e.Handled = true;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtLTTQ.Focus();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; private void txtQT_KeyPress(object sender, KeyPressEventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (e.KeyChar == 13)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (txtQT.Text.Trim() == "")<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; MessageBox.Show("Bạn Chưa Nhập Nội Dung");<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtQT.Text = "";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtQT.Focus();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtQT1.Focus();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else if (e.KeyChar &lt; 48 || e.KeyChar &gt; 57)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; MessageBox.Show("Điểm Bạn Nhập Bắt Buộc Là Số");<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; e.Handled = true;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtQT.Focus();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; private void txtQT1_KeyPress(object sender, KeyPressEventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (e.KeyChar == 13)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (txtQT1.Text.Trim() == "")<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; MessageBox.Show("Bạn Chưa Nhập Nội Dung");<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtQT1.Text = "";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtQT1.Focus();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtQT2.Focus();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else if (e.KeyChar &lt; 48 || e.KeyChar &gt; 57)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; MessageBox.Show("Điểm Bạn Nhập Bắt Buộc Là Số");<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; e.Handled = true;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtQT1.Focus();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; private void txtQT2_KeyPress(object sender, KeyPressEventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (e.KeyChar == 13)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (txtQT2.Text.Trim() == "")<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; MessageBox.Show("Bạn Chưa Nhập Nội Dung");<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtQT2.Text = "";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtQT2.Focus();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; btnNhap.Focus();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else if (e.KeyChar &lt; 48 || e.KeyChar &gt; 57)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; MessageBox.Show("Điểm Bạn Nhập Bắt Buộc Là Số");<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; e.Handled = true;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtQT2.Focus();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; private void btnNhap_Click(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; double trungBinh=0;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; double mon1 = double.Parse(txtSever.Text);<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; double mon2 = double.Parse(txtLTTQ.Text);<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; double mon3 = double.Parse(txtQT.Text);<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; double mon4 = double.Parse(txtQT1.Text);<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; double mon5 = double.Parse(txtQT2.Text);<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; trungBinh = (mon1 + mon2 + mon3 + mon4 + mon5) / 5;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtDiemtb.Text = trungBinh.ToString();<br><br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; //Xếp Loại<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; string str = txtNhap.Text +" \n"+"Xếp Loại: ";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (trungBinh&gt;9)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; str += "Xuất Xắc";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else if(trungBinh&gt;=8)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; str += "Giỏi";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else if(trungBinh&gt;6.5)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; str += "Khá";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else if(trungBinh&gt;=5)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; str += "Trung Bình";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; str += "Yếu";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; rtxtThongTin.Text = str;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; btnReset.Focus();<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; private void btnReset_Click(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtNhap.Text = "";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtSever.Text = "";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtLTTQ.Text = "";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtQT.Text = "";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtQT1.Text = "";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtQT2.Text = "";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; rtxtThongTin.Text = "";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtDiemtb.Text = "";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtNhap.Focus();<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br><br>&nbsp; &nbsp; &nbsp; &nbsp; private void btnThoat_Click(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; DialogResult dl;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; dl = MessageBox.Show("Bạn Có Chắc Muốn Thoát", "Thông Báo", MessageBoxButtons.YesNo, MessageBoxIcon.Question);<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (dl==DialogResult.Yes)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Close();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; }</div>]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1355709771/be4f93345035f169649db3f1d9425538/Screenshot__77_.png" />
         <pubDate>2021-09-29 03:19:30 UTC</pubDate>
         <guid>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1776711552</guid>
      </item>
      <item>
         <title>Nhóm 7 : Bài 31</title>
         <author>lenhutnam159</author>
         <link>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1776738144</link>
         <description><![CDATA[<div>using System;<br>using System.Collections.Generic;<br>using System.ComponentModel;<br>using System.Data;<br>using System.Drawing;<br>using System.Linq;<br>using System.Text;<br>using System.Threading.Tasks;<br>using System.Windows.Forms;<br><br>namespace thuchanh2<br>{<br>&nbsp; &nbsp; public partial class Form1 : Form<br>&nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; public Form1()<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; InitializeComponent();<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br><br>&nbsp; &nbsp; &nbsp; &nbsp; private void btthoat_Click(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; this.Close();<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br><br>&nbsp; &nbsp; &nbsp; &nbsp; private void btreset_Click(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtkhungdiemtrungbinh.ResetText();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtkhungnhapdiem.ResetText();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; n = 0;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; s = " ";<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; int n = 0, i, dodaichuoi;<br>&nbsp; &nbsp; &nbsp; &nbsp; int[] a = new int[100];<br>&nbsp; &nbsp; &nbsp; &nbsp; string s,s1;<br>&nbsp; &nbsp; &nbsp; &nbsp; private void bttinhdiemtb_Click(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; s = (txtkhungnhapdiem.Text);<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; i = s.LastIndexOf(" ");<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; while (i != -1)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; s1 = s.Substring(i);<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; s = s.Substring(0,i);<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; a[n] = Convert.ToInt32(s1);<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; n++;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; i = s.LastIndexOf(" ");<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; a[n] = Convert.ToInt32(s);<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;s = " ";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; for (int i = n; i &gt;= 0; i--)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; s = s + a[i].ToString();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; string kq = s.Trim();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; dodaichuoi = kq.Length;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; int tong = 0;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; for (i = 0; i &lt;= n; i++)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; tong += a[i];<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; float tbc = (float)tong / dodaichuoi;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtkhungdiemtrungbinh.Text = tbc.ToString();<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; }<br>}</div>]]></description>
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         <pubDate>2021-09-29 03:30:59 UTC</pubDate>
         <guid>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1776738144</guid>
      </item>
      <item>
         <title>Nhóm 1</title>
         <author>hient940923</author>
         <link>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1778447263</link>
         <description><![CDATA[<div>&nbsp; | Nguyễn Việt&nbsp; | Anh: trình bày 9<br>&nbsp;| Đinh Thiên&nbsp; | Bảo: trình bày 9<br>&nbsp;| Thiều Trung&nbsp; | Chiến 7<br>&nbsp;| Phan Ngọc&nbsp; | Đức 7<br>&nbsp;| Nguyễn Chí&nbsp; | Dũng 8<br>&nbsp;| Trần Minh&nbsp; | Hậu. 4</div>]]></description>
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         <pubDate>2021-09-29 15:17:34 UTC</pubDate>
         <guid>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1778447263</guid>
      </item>
      <item>
         <title>Nhóm 2</title>
         <author>hient940923</author>
         <link>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1778452259</link>
         <description><![CDATA[<div>&nbsp; | Lê Thị Vân&nbsp; | Anh 8<br>&nbsp;| Trịnh Bảo&nbsp; | Đạt: trình bày 9<br>&nbsp;| Nguyễn Thùy&nbsp; | Dung 0<br>&nbsp;| Nguyễn Trần Trường&nbsp; | Giang 5<br>&nbsp;| Lê Thị Thu&nbsp; | Hiền 0<br>&nbsp;| Lê Âu Minh&nbsp; | Hiếu. 5</div>]]></description>
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         <pubDate>2021-09-29 15:18:49 UTC</pubDate>
         <guid>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1778452259</guid>
      </item>
      <item>
         <title>Nhóm 4</title>
         <author>hient940923</author>
         <link>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1778460684</link>
         <description><![CDATA[<div>&nbsp; | Hoàng Xuân&nbsp; | Hòa 5<br>&nbsp;| Võ Thanh&nbsp; | Khang   5<br>&nbsp;| Đào Duy&nbsp; | Luân 8<br>&nbsp;| Trần Hồ Phúc&nbsp; | Nguyên 5<br>&nbsp;| Phạm Văn&nbsp; | Phong: trình bày 10 <br>&nbsp;| Quách Thành&nbsp; | Long 5</div>]]></description>
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         <pubDate>2021-09-29 15:20:59 UTC</pubDate>
         <guid>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1778460684</guid>
      </item>
      <item>
         <title>Nhóm 5</title>
         <author>hient940923</author>
         <link>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1778465081</link>
         <description><![CDATA[<div>&nbsp; | Nguyễn Tấn&nbsp; | Phúc<br>&nbsp;| Trần Anh&nbsp; | Qúi<br>&nbsp;| Nguyễn Khánh&nbsp; | Tâm<br>&nbsp;| Lê Ngọc&nbsp; | Thanh: trình bày<br>&nbsp;| Hoàng Thu&nbsp; | Trang<br>| Trương Hạo&nbsp; | Nam<br>&nbsp;</div>]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1341143403/cc5f6964cd8798c6471dde44ff924620/B23.jpg" />
         <pubDate>2021-09-29 15:22:09 UTC</pubDate>
         <guid>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1778465081</guid>
      </item>
      <item>
         <title>Nhóm 6</title>
         <author>hient940923</author>
         <link>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1778471743</link>
         <description><![CDATA[<div>&nbsp; | Nguyễn Minh&nbsp; | Quân 6<br>&nbsp;| Lê Thanh&nbsp; | Sơn: Trình bày 8<br>&nbsp;| Huỳnh Minh&nbsp; | Tân 6<br>&nbsp;| Phạm Suối&nbsp; | Tiên 6<br>&nbsp;| Hà Thị&nbsp; | Trang 7<br>&nbsp;| Kiều Thị Huyền&nbsp; | Nhi 6</div>]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1341143403/ff64267cf5f8ae02829b7f6f543bb231/B27.jpg" />
         <pubDate>2021-09-29 15:23:57 UTC</pubDate>
         <guid>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1778471743</guid>
      </item>
      <item>
         <title>Nhóm 7</title>
         <author>hient940923</author>
         <link>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1778472370</link>
         <description><![CDATA[<div>&nbsp; | Võ Đình&nbsp; | Tuấn 8<br>&nbsp;| Nguyễn Hoàng Hải&nbsp; | Triều 6<br>&nbsp;| Lê Nhựt&nbsp; | Nam: trình bày 9<br>&nbsp;| Nguyễn Xuân&nbsp; | Trường 8<br>&nbsp;| Võ Thành&nbsp; | Phú 8<br>&nbsp;| Trần Minh&nbsp; | Hoàng 5</div>]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1341143403/4520599b8b96ba73e3473f5c4a481eaa/B24.jpg" />
         <pubDate>2021-09-29 15:24:07 UTC</pubDate>
         <guid>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1778472370</guid>
      </item>
      <item>
         <title>Nhóm 8</title>
         <author>hient940923</author>
         <link>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1778474948</link>
         <description><![CDATA[<div><br>&nbsp;| Võ Văn&nbsp; | Ý<br>&nbsp;| Nguyễn Văn&nbsp; | Phát: Trình bày<br>&nbsp;| Hà Văn&nbsp; | Hoàng<br>&nbsp;| Lý Minh&nbsp; | Triệu<br>&nbsp;| Phạm Văn&nbsp; | Quang: Trình bày</div>]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1341143403/1623036a007e5ff3d47326677463caf1/B36.jpg" />
         <pubDate>2021-09-29 15:24:50 UTC</pubDate>
         <guid>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1778474948</guid>
      </item>
      <item>
         <title>Bài 35 Nhóm 4</title>
         <author>vanphongdz435</author>
         <link>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1779852867</link>
         <description><![CDATA[<div>public FrmCongTyDuLich()<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; InitializeComponent();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; this.ActiveControl = txtTen;<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; private void txtTen_KeyPress(object sender, KeyPressEventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if(e.KeyChar==13)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if(txtTen.Text.Trim()=="")<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; MessageBox.Show("Bạn Chưa Nhập Tên Khách Hàng");<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; dtpNgaySinh.Focus();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; private void txtDiaChi_KeyPress(object sender, KeyPressEventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (e.KeyChar == 13)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (txtDiaChi.Text.Trim() == "")<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; MessageBox.Show("Bạn Chưa Nhập Tên Khách Hàng");<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtDiaChi.Text = "";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtDiaChi.Focus();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; cmbDiaDiemDi.Focus();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; private void btnNhap_Click(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; string format = "dd/MM/yyyy";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; string ngaySinh = dtpNgaySinh.Value.ToString(format);<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; string str = "Khách Hàng: " + txtTen.Text +&nbsp;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; "\n"+"Ngày Sinh: "+ngaySinh+<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; "\n"+"Địa Chỉ: "+txtDiaChi.Text+<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; "\n"+"Địa Điểm Xuất Phát: "+cmbDiaDiemDi.Text+<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; "\n"+"Địa Điểm Đến: "+cmbDiaDiemDen.Text;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; rtxtThongTin.Text = str;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; dtpNgayVe_ValueChanged(sender, e);<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; private void dtpNgayVe_ValueChanged(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtTongNgay.Text=Convert.ToInt32((dtpNgayVe.Value - dtpNgayDi.Value).TotalDays).ToString();<br>&nbsp; &nbsp; &nbsp; &nbsp; }</div>]]></description>
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         <pubDate>2021-09-30 01:46:22 UTC</pubDate>
         <guid>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1779852867</guid>
      </item>
      <item>
         <title>Bài 24 Nhóm 7</title>
         <author>lenhutnam159</author>
         <link>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1779896035</link>
         <description><![CDATA[<div>using System;<br>using System.Collections.Generic;<br>using System.ComponentModel;<br>using System.Data;<br>using System.Drawing;<br>using System.Linq;<br>using System.Text;<br>using System.Threading.Tasks;<br>using System.Windows.Forms;<br><br>namespace BTthuchanh3<br>{<br>&nbsp; &nbsp; public partial class Form1 : Form<br>&nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; public Form1()<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; InitializeComponent();<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br><br>&nbsp; &nbsp; &nbsp; &nbsp; private void btnthoat_Click(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; this.Close();<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br><br>&nbsp; &nbsp; &nbsp; &nbsp; private void btnreset_Click(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; khungxuat.ResetText();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; khungnhaphoten.ResetText();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; khungngay.ResetText();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; khungthang.ResetText();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; khungnam.ResetText();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; lbdanhsachchon.Items.Clear();<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; private void Form1_Load(object sender,EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; this.lbchondichvu.Items.Add("Siêu Âm");<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; this.lbchondichvu.Items.Add("Thử Máu");<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; this.lbchondichvu.Items.Add("Nội Soi");<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; this.lbchondichvu.Items.Add("X-Quang");<br><br>&nbsp; &nbsp; &nbsp; &nbsp; }<br><br>&nbsp; &nbsp; &nbsp; &nbsp; private void lbchondichvu_SelectedIndexChanged(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; this.lbdanhsachchon.Items.Add(lbchondichvu.SelectedItem.ToString());<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br><br>&nbsp; &nbsp; &nbsp; &nbsp; private void btnchon_Click(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; int i;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; int n =lbdanhsachchon.Items.Count;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; khungxuat.Text="Họ Tên: "+khungnhaphoten.Text + "\r\nNgày Sinh: "+khungngay.Text + "/"+khungthang.Text + "/" + khungnam.Text + "\r\nDịch vụ đã chọn: ";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; for (i=0;i&lt;n;i++)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; lbdanhsachchon.SelectedIndex = i;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; khungxuat.Text += lbdanhsachchon.Text + ",";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }&nbsp; &nbsp;&nbsp;<br><br>&nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; }<br>}<br><br></div>]]></description>
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         <pubDate>2021-09-30 02:03:29 UTC</pubDate>
         <guid>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1779896035</guid>
      </item>
      <item>
         <title>nhóm 8 </title>
         <author></author>
         <link>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1780041988</link>
         <description><![CDATA[<div>using System;<br>using System.Collections.Generic;<br>using System.ComponentModel;<br>using System.Data;<br>using System.Drawing;<br>using System.Linq;<br>using System.Text;<br>using System.Threading.Tasks;<br>using System.Windows.Forms;<br><br>namespace tinhtiendien<br>{<br>&nbsp; &nbsp; public partial class Form1 : Form<br>&nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; public Form1()<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; InitializeComponent();<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br><br>&nbsp; &nbsp; &nbsp; &nbsp; private void Form1_Load(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br><br>&nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; int n1,n2,n3, n4,n5;<br><br>&nbsp; &nbsp; &nbsp; &nbsp; private void buin_Click(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtxuathaodon.Text = cobkhachhang.SelectedItem + "\r \n" + "Số Kw tiêu thụ: " + txttieuthu.Text + "\r \n" + "Thành tiền: " + txtthanhtien.Text;<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br><br>&nbsp; &nbsp; &nbsp; &nbsp; private void butinh_Click(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; n3 = Convert.ToInt32(txttieuthu.Text);<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; n4 = Convert.ToInt32(txtkwtrongdinhmuc.Text);<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; n5 = Convert.ToInt32(txtkwvuotdinhmuc.Text);<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (n3 &lt;= 50)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtthanhtien.Text = Convert.ToInt32(n4 * 500).ToString();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtthanhtien.Text = Convert.ToInt32((n4 * 500) + (n5 * 1000)).ToString();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br><br>&nbsp; &nbsp; &nbsp; &nbsp; private void butiep_Click(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br><br>&nbsp; &nbsp; &nbsp; &nbsp; }<br><br>&nbsp; &nbsp; &nbsp; &nbsp; int kwtrongdinhmuc = 50, kwvuotdinhmuc = 0;<br><br>&nbsp; &nbsp; &nbsp; &nbsp; private void txttieuthu_TextChanged(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; n3 = Convert.ToInt32(txttieuthu.Text);<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (n3 &lt;= 50)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtkwtrongdinhmuc.Text = n3.ToString();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtkwvuotdinhmuc.Text = kwvuotdinhmuc.ToString();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtkwtrongdinhmuc.Text = kwtrongdinhmuc.ToString();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; int n4 = Convert.ToInt32(txtkwtrongdinhmuc.Text);<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtkwvuotdinhmuc.Text = Convert.ToInt32(n3 - n4).ToString();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br><br><br>&nbsp; &nbsp; &nbsp; &nbsp; private void txtcsmoi_TextChanged(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; n1 = Convert.ToInt32(txtcscu.Text);<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; n2 = Convert.ToInt32(txtcsmoi.Text);<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txttieuthu.Text = Convert.ToInt32(n2 - n1).ToString();<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br><br>&nbsp; &nbsp; &nbsp; &nbsp; private void buthoat_Click(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; this.Close();<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; }<br>}<br><br></div>]]></description>
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         <pubDate>2021-09-30 02:59:57 UTC</pubDate>
         <guid>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1780041988</guid>
      </item>
      <item>
         <title>nhóm 5</title>
         <author>lengocthanh280819</author>
         <link>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1780111231</link>
         <description><![CDATA[<div>using System;<br>using System.Collections.Generic;<br>using System.ComponentModel;<br>using System.Data;<br>using System.Drawing;<br>using System.Linq;<br>using System.Text;<br>using System.Threading.Tasks;<br>using System.Windows.Forms;<br><br>namespace bài_tập_nhóm_9<br>{<br>&nbsp; &nbsp; public partial class Form1 : Form<br>&nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; public Form1()<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; InitializeComponent();<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br><br>&nbsp; &nbsp; &nbsp; &nbsp; private void label1_Click(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br><br>&nbsp; &nbsp; &nbsp; &nbsp; }<br><br>&nbsp; &nbsp; &nbsp; &nbsp; private void label2_Click(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br><br>&nbsp; &nbsp; &nbsp; &nbsp; }<br><br>&nbsp; &nbsp; &nbsp; &nbsp; private void textBox2_TextChanged(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br><br>&nbsp; &nbsp; &nbsp; &nbsp; }<br><br>&nbsp; &nbsp; &nbsp; &nbsp; private void label3_Click(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br><br>&nbsp; &nbsp; &nbsp; &nbsp; }<br><br>&nbsp; &nbsp; &nbsp; &nbsp; private void button1_Click(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; int i;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; int n = lbdanhsanhcacmon.Items.Count;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; for (i = 0; i &lt;= n - 1; i++)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; lbdanhsanhcacmon.SelectedIndex = 0;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; lbdanhsachchon.Items.Add(lbdanhsanhcacmon.SelectedItem.ToString());<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; lbdanhsanhcacmon.Items.Remove(lbdanhsanhcacmon.SelectedItem.ToString());<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }&nbsp; &nbsp;&nbsp;<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br><br>&nbsp; &nbsp; &nbsp; &nbsp; private void label5_Click(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br><br>&nbsp; &nbsp; &nbsp; &nbsp; }<br><br>&nbsp; &nbsp; &nbsp; &nbsp; private void label4_Click(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br><br>&nbsp; &nbsp; &nbsp; &nbsp; }<br><br>&nbsp; &nbsp; &nbsp; &nbsp; private void cbonhapten_SelectedIndexChanged(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br><br>&nbsp; &nbsp; &nbsp; &nbsp; }<br><br>&nbsp; &nbsp; &nbsp; &nbsp; private void btthoat_Click(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; this.Close();<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br><br>&nbsp; &nbsp; &nbsp; &nbsp; private void btreset_Click(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; rtbketqua.ResetText();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; lbdanhsachchon.Items.Clear();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; lbdanhsanhcacmon.Items.Clear();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; btnngaythang.ResetText();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; btnthoigian.ResetText();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; cbonhapten.ResetText();<br><br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; lbdanhsanhcacmon.Items.Add("bóng đá");<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; lbdanhsanhcacmon.Items.Add("bóng bàn");<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; lbdanhsanhcacmon.Items.Add("cầu lông");<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; lbdanhsanhcacmon.Items.Add("nhảy dù");<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; lbdanhsanhcacmon.Items.Add("bắn bi");<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; lbdanhsanhcacmon.Items.Add("bập bênh");<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br><br>&nbsp; &nbsp; &nbsp; &nbsp; private void btchontungfile_Click(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; int i = lbdanhsanhcacmon.SelectedIndex;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; string item = lbdanhsanhcacmon.Items[i].ToString();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; lbdanhsachchon.Items.Add(item);<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; lbdanhsanhcacmon.Items.Remove(item);<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br><br>&nbsp; &nbsp; &nbsp; &nbsp; private void btbohet_Click(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; int i;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; int n = lbdanhsachchon.Items.Count;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; for (i=0;i&lt;=n-1;i++)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; lbdanhsachchon.SelectedIndex = 0;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; lbdanhsanhcacmon.Items.Add(lbdanhsachchon.SelectedItem.ToString());<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; lbdanhsachchon.Items.Remove(lbdanhsachchon.SelectedItem.ToString());<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }&nbsp; &nbsp;&nbsp;<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br><br>&nbsp; &nbsp; &nbsp; &nbsp; private void btbotungfile_Click(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; int i = lbdanhsachchon.SelectedIndex;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; string item = lbdanhsachchon.Items[i].ToString();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; lbdanhsanhcacmon.Items.Add(item);<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; lbdanhsachchon.Items.Remove(item);<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br><br>&nbsp; &nbsp; &nbsp; &nbsp; private void btnhap_Click(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; int i;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; int n = lbdanhsachchon.Items.Count;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; rtbketqua.Text = cbonhapten.Text +<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;"\r\n" + btnngaythang.Text +<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;" " + btnthoigian.Text +<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;"\r\n** môn đã chọn: \r\n";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; for (i=0;i&lt;n;i++)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; lbdanhsachchon.SelectedIndex = i;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; rtbketqua.Text += lbdanhsachchon.Text + ",";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }&nbsp; &nbsp;&nbsp;<br><br>&nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; }<br>}<br><br></div>]]></description>
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         <pubDate>2021-09-30 03:28:45 UTC</pubDate>
         <guid>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1780111231</guid>
      </item>
      <item>
         <title>Nhóm 1 Đang trình bày</title>
         <author>hient940923</author>
         <link>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1782843010</link>
         <description><![CDATA[<div>&nbsp;| Nguyễn Việt&nbsp; | Anh: trình chiếu 10<br>&nbsp;| Đinh Thiên&nbsp; | Bảo: trình bày 10<br>&nbsp;| Thiều Trung&nbsp; | Chiến 8<br>&nbsp;| Phan Ngọc&nbsp; | Đức 8<br>&nbsp;| Nguyễn Chí&nbsp; | Dũng 8<br>&nbsp;| Trần Minh&nbsp; | Hậu. 5</div>]]></description>
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         <pubDate>2021-10-01 00:53:59 UTC</pubDate>
         <guid>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1782843010</guid>
      </item>
      <item>
         <title>Nhóm 2 đang trình bày</title>
         <author>hient940923</author>
         <link>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1782844438</link>
         <description><![CDATA[<div>| Lê Thị Vân&nbsp; | Anh 5<br>&nbsp;| Trịnh Bảo&nbsp; | Đạt: trình bày 10<br>&nbsp;| Nguyễn Thùy&nbsp; | Dung 5<br>&nbsp;| Nguyễn Trần Trường&nbsp; | Giang 5<br>&nbsp;| Lê Thị Thu&nbsp; | Hiền 5<br>&nbsp;| Lê Âu Minh&nbsp; | Hiếu. 5</div>]]></description>
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         <pubDate>2021-10-01 00:54:40 UTC</pubDate>
         <guid>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1782844438</guid>
      </item>
      <item>
         <title>Nhóm 3 Đã thuyết trình</title>
         <author>hient940923</author>
         <link>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1782845425</link>
         <description><![CDATA[<div>&nbsp;| Hoàng Xuân&nbsp; | Hòa 5<br>&nbsp;| Võ Thanh&nbsp; | Khang 5<br>&nbsp;| Đào Duy&nbsp; | Luân 6<br>&nbsp;| Trần Hồ Phúc&nbsp; | Nguyên 5<br>&nbsp;| Phạm Văn&nbsp; | Phong: thuyết trình 10<br>&nbsp;| Quách Thành&nbsp; | Long 5</div>]]></description>
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         <pubDate>2021-10-01 00:55:06 UTC</pubDate>
         <guid>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1782845425</guid>
      </item>
      <item>
         <title>Nhóm 4 đã thuyết trình</title>
         <author>hient940923</author>
         <link>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1782847343</link>
         <description><![CDATA[<div>| Nguyễn Tấn&nbsp; | Phúc 5<br>&nbsp;| Trần Anh&nbsp; | Qúi  5<br>&nbsp;| Nguyễn Khánh&nbsp; | Tâm 4<br>&nbsp;| Lê Ngọc&nbsp; | Thanh: thuyết trình 9<br>&nbsp;| Hoàng Thu&nbsp; | Trang  5<br>| Trương Hạo&nbsp; | Nam 5<br>&nbsp;</div>]]></description>
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         <pubDate>2021-10-01 00:55:56 UTC</pubDate>
         <guid>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1782847343</guid>
      </item>
      <item>
         <title>Nhóm 5 đã thuyết trình</title>
         <author>hient940923</author>
         <link>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1782848132</link>
         <description><![CDATA[<div>| Nguyễn Minh&nbsp; | Quân 5<br>&nbsp;| Lê Thanh&nbsp; | Sơn: Thuyết trình 9<br>&nbsp;| Huỳnh Minh&nbsp; | Tân 5<br>&nbsp;| Phạm Suối&nbsp; | Tiên 5<br>&nbsp;| Hà Thị&nbsp; | Trang 6<br>&nbsp;| Kiều Thị Huyền&nbsp; | Nhi 5</div>]]></description>
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         <pubDate>2021-10-01 00:56:16 UTC</pubDate>
         <guid>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1782848132</guid>
      </item>
      <item>
         <title>Nhóm 6 đang thuyết trình</title>
         <author>hient940923</author>
         <link>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1782849848</link>
         <description><![CDATA[<div>| Võ Đình&nbsp; | Tuấn 7<br>&nbsp;| Nguyễn Hoàng Hải&nbsp; | Triều 5<br>&nbsp;| Lê Nhựt&nbsp; | Nam: trình bày 8<br>&nbsp;| Nguyễn Xuân&nbsp; | Trường 7<br>&nbsp;| Võ Thành&nbsp; | Phú 5<br>&nbsp;| Trần Minh&nbsp; | Hoàng 5</div>]]></description>
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         <pubDate>2021-10-01 00:57:01 UTC</pubDate>
         <guid>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1782849848</guid>
      </item>
      <item>
         <title>Nhóm 7 đã trình bày</title>
         <author>hient940923</author>
         <link>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1782850941</link>
         <description><![CDATA[<div>&nbsp;| Võ Văn&nbsp; | Ý vắng<br>&nbsp;| Nguyễn Văn&nbsp; | Phát: trình bày 8<br>&nbsp;| Hà Văn&nbsp; | Hoàng 7<br>&nbsp;| Lý Minh&nbsp; | Triệu 5<br>&nbsp;| Phạm Văn&nbsp; | Quang 8</div>]]></description>
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         <pubDate>2021-10-01 00:57:30 UTC</pubDate>
         <guid>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1782850941</guid>
      </item>
      <item>
         <title>Nhóm 3 Bài 48</title>
         <author>vanphongdz435</author>
         <link>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1783000043</link>
         <description><![CDATA[<div>Code Form Chính:&nbsp;<br>public partial class FrmKhamRang : Form<br>&nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; int tongTien = 0;<br>&nbsp; &nbsp; &nbsp; &nbsp; HoaDon hoaDon;<br>&nbsp; &nbsp; &nbsp; &nbsp; Color colorButton;<br>&nbsp; &nbsp; &nbsp; &nbsp; public FrmKhamRang()<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; InitializeComponent();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; ToolTip tip = new ToolTip();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; tip.SetToolTip(groupBox1, "Các Dịch Vụ");<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; tip.SetToolTip(btnTinh, "Thanh Toán Nếu Bạn Đã Chọn Dịch Vụ Xong");<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; tip.SetToolTip(btnThoat, "Nhấn Để Thoát Chương Trình");<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; colorButton = btnTinh.BackColor;<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; #region Các Sự Kiện Của Checkbox<br>&nbsp; &nbsp; &nbsp; &nbsp; private void cbxTramRang_CheckedChanged(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if(cbxTramRang.Checked==true)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; tongTien += 100000;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; tongTien -= 100000;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; private void cbxNiengRang_CheckedChanged(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (cbxNiengRang.Checked == true)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; tongTien += 200000;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; tongTien -= 200000;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; private void cbxCaoVoiRang_CheckedChanged(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (cbxCaoVoiRang.Checked == true)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; tongTien += 300000;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; tongTien -= 300000;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; private void cbxTrongRangGia_CheckedChanged(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br><br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (cbxTrongRangGia.Checked == true)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtSoLuongRangGia.Enabled = true;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtSoLuongRangGia.Enabled = false;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; #endregion<br><br>&nbsp; &nbsp; &nbsp; &nbsp; #region Các Sự Kiện Keypress<br>&nbsp; &nbsp; &nbsp; &nbsp; private void txtTen_KeyPress(object sender, KeyPressEventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (e.KeyChar == 13)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (txtTen.Text.Trim() == "")<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; MessageBox.Show("Bạn Chưa Nhập Tên ");<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtTen.Text = "";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtTen.Focus();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; btnTinh.Focus();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; private void txtSoLuongRangGia_KeyPress(object sender, KeyPressEventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (e.KeyChar == 13)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (txtSoLuongRangGia.Text.Trim() == "")<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; MessageBox.Show("Mời Nhập Số Răng Giả");<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtSoLuongRangGia.Focus();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; btnTinh.Focus();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else if ((e.KeyChar &lt; 48 || e.KeyChar &gt; 57)&amp;&amp;e.KeyChar!=8)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; MessageBox.Show("Bạn Phải Nhập Số");<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; e.Handled = true;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtSoLuongRangGia.Focus();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; #endregion<br>&nbsp; &nbsp; &nbsp; &nbsp;&nbsp;<br>&nbsp; &nbsp; &nbsp; &nbsp; #region Các Sự Kiện Click Của Các Button<br>&nbsp; &nbsp; &nbsp; &nbsp; private void btnTinh_Click(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if(txtTen.Text.Trim()=="")<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; MessageBox.Show("Bạn Chưa Nhập Tên Khách Hàng");<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtTen.Text = "";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtTen.Focus();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (cbxTrongRangGia.Checked == true)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if(txtSoLuongRangGia.Text.Trim()=="")<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; MessageBox.Show("Bạn Phải Nhập Số Răng Giả Cho Dịch Vụ");<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtSoLuongRangGia.Text = "";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtSoLuongRangGia.Focus();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; int soluongRangGia = int.Parse(txtSoLuongRangGia.Text);<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; tongTien += 1000000 * soluongRangGia;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtTongTien.Text = tongTien.ToString() + "đ";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; hoaDon = new HoaDon(txtTen.Text, tongTien);<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; hoaDon.ShowDialog();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; btnReset.Focus();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtTongTien.Text = tongTien.ToString() + "đ";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; hoaDon = new HoaDon(txtTen.Text, tongTien);<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; hoaDon.ShowDialog();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; btnReset.Focus();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; private void btnReset_Click(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtTen.Text = "";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtTongTien.Text = "";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; tongTien = 0;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; foreach (CheckBox cbx in groupBox1.Controls.OfType&lt;CheckBox&gt;())<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (cbx.Checked == true)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; cbx.Checked = false;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtSoLuongRangGia.Text = "";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtTen.Focus();<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; private void btnThoat_Click(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; DialogResult dl;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; dl = MessageBox.Show("Bạn Có Chắc Muốn Thoát", "Thông Báo", MessageBoxButtons.YesNo, MessageBoxIcon.Question);<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if(dl==DialogResult.Yes)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Close();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; #endregion<br><br>&nbsp; &nbsp; &nbsp; &nbsp; #region Các Sự Kiện Rê Chuột<br>&nbsp; &nbsp; &nbsp; &nbsp; private void btnTinh_MouseMove(object sender, MouseEventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; btnTinh.BackColor = Color.Blue;<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; private void btnTinh_MouseLeave(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; btnTinh.BackColor = colorButton;<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; private void btnThoat_MouseMove(object sender, MouseEventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; btnThoat.BackColor = Color.Blue;<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; private void btnThoat_MouseLeave(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; btnThoat.BackColor = colorButton;<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; private void btnReset_MouseMove(object sender, MouseEventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; btnReset.BackColor = Color.Blue;<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; private void btnReset_MouseLeave(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; btnReset.BackColor = colorButton;<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; #endregion<br>&nbsp; &nbsp; }<br><br>Code Form Phụ:<br>public partial class HoaDon : Form<br>&nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; public HoaDon(string ten,int tongTien)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; InitializeComponent();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; lbTen.Text = ten;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; lbTongTien.Text = tongTien.ToString()+"đ";<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; private void btnOk_Click(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Close();<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; private void HoaDon_Load(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if(lbTongTien.Text== "0đ")<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; lbTongTien.Text += " (Bạn Chưa Chọn Các Dịch Vụ)";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; }</div>]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1355709771/e39c2c4997c9ea482238b9c9774cc61e/Screenshot__82_.png" />
         <pubDate>2021-10-01 01:59:32 UTC</pubDate>
         <guid>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1783000043</guid>
      </item>
      <item>
         <title>Nhóm 6 Bài 52</title>
         <author>lenhutnam159</author>
         <link>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1783173757</link>
         <description><![CDATA[<div>Code form 1:<br>using System.Drawing;<br>using System.Linq;<br>using System.Text;<br>using System.Threading.Tasks;<br>using System.Windows.Forms;<br><br>namespace btthuchanh4<br>{<br>&nbsp; &nbsp; public partial class Form1 : Form<br>&nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; public Form1()<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; InitializeComponent();<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br><br>&nbsp; &nbsp; &nbsp; &nbsp; private void btnchao_Click(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; formchao kt = new formchao();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; kt.Message = khungnhapten.Text;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; kt.Show();&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br><br>&nbsp; &nbsp; &nbsp; &nbsp; private void btnthoat_Click(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; DialogResult thongbao;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; thongbao = (MessageBox.Show("Bạn có muốn thoát ? ","thông báo ",MessageBoxButtons.YesNo, MessageBoxIcon.Warning));<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (thongbao == DialogResult.Yes)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Application.Exit();<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; private void Form1_Load(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; timer1_Tick.Start();<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; }<br>}<br><br><br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;Code form 2<br>using System;<br>using System.Collections.Generic;<br>using System.ComponentModel;<br>using System.Data;<br>using System.Drawing;<br>using System.Linq;<br>using System.Text;<br>using System.Threading.Tasks;<br>using System.Windows.Forms;<br><br>namespace btthuchanh4<br>{<br>&nbsp; &nbsp; public partial class formchao : Form<br>&nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; public formchao()<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; InitializeComponent();<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br><br>&nbsp; &nbsp; &nbsp; &nbsp; private void btthoat_Click(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; this.Close();<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; private string _message;<br>&nbsp; &nbsp; &nbsp; &nbsp; public String Message<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; get { return _message;}<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; set { _message = value;}<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; int day = DateTime.Now.Day;<br>&nbsp; &nbsp; &nbsp; &nbsp; int month = DateTime.Now.Month;<br>&nbsp; &nbsp; &nbsp; &nbsp; int year = DateTime.Now.Year;<br>&nbsp; &nbsp; &nbsp; &nbsp; int gio = DateTime.Now.Hour;<br>&nbsp; &nbsp; &nbsp; &nbsp; int phut = DateTime.Now.Minute;<br><br>&nbsp; &nbsp; &nbsp; &nbsp; private void formchao_Load(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; labelTen.Text = _message;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; string s = labelTen.Text.Trim();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; while (s.IndexOf(" &nbsp; ") &gt;= 0)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; s = s.Replace(" ", " ");<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; labelTen.Text = "Chào: "+s.ToString();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; thoigian.Text = "Bây giờ là: " + gio + " Giờ " + phut + " Phút ";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; ngaythangnam.Text ="Hôm nay là: " + "Ngày " + day + " Tháng " + month + " Năm " + year;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if(gio&lt;13)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; { sangchieutoi.Text = "Nhóm 7 xin chào buổi sáng "+ s.ToString();}<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else if (gio&lt;=18)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; { sangchieutoi.Text = "Nhóm 7 xin chào buổi chiều "+ s.ToString();}<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; { sangchieutoi.Text = "Nhóm 7 xin chào buổi tối "+ s.ToString();}&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp;<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; }<br>}<br><br></div>]]></description>
         <enclosure url="https://padlet-uploads.storage.googleapis.com/1355708007/410d572c2466c56e0e1233f7d2e059d7/image.png" />
         <pubDate>2021-10-01 03:15:18 UTC</pubDate>
         <guid>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1783173757</guid>
      </item>
      <item>
         <title>nhóm 4</title>
         <author>lengocthanh280819</author>
         <link>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1783200877</link>
         <description><![CDATA[<div>namespace bài_tập_4<br>{<br>&nbsp; &nbsp; public partial class Form1 : Form<br>&nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; int a, b, c, x, y, z;<br>&nbsp; &nbsp; &nbsp; &nbsp; public Form1()<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; InitializeComponent();<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br><br>&nbsp; &nbsp; &nbsp; &nbsp; private void btthoat_Click(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; this.Close();<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br><br>&nbsp; &nbsp; &nbsp; &nbsp; private void bttinhchatcuatamgiac_Click(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; a = Convert.ToInt32(btncanha.Text);<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; b = Convert.ToInt32(btncanhb.Text);<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; c = Convert.ToInt32(btncanhc.Text);<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; x = a * a;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; y = b * b;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; z = c * c;<br><br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (a + b &gt; c &amp;&amp; a + b &gt; b &amp;&amp; b + c &gt; a)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (x == y || y == z ||z == x )<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (x == y &amp;&amp; y == z)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; lblketqua.Text = ("tam giác đều");<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (x == y + z || y == x + z || z == x + y)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; lblketqua.Text = ("tam giác vuông cân");<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; lblketqua.Text = ("tam giac cân");<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (x == y + z || y == z + x || z == x + y)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; lblketqua.Text = ("tam giac vuong");<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; lblketqua.Text = ("tam giác thường");<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; lblketqua.Text = ("ba cạnh ko tạo thành tam giác");<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; }<br>}<br><br></div>]]></description>
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         <pubDate>2021-10-01 03:28:11 UTC</pubDate>
         <guid>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1783200877</guid>
      </item>
      <item>
         <title>Bài nhóm 7</title>
         <author>vanphat1232003</author>
         <link>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1783292902</link>
         <description><![CDATA[<div>using System;<br>using System.Collections.Generic;<br>using System.ComponentModel;<br>using System.Data;<br>using System.Drawing;<br>using System.Linq;<br>using System.Text;<br>using System.Threading.Tasks;<br>using System.Windows.Forms;<br><br>namespace Bài_nhóm_bài_4<br>{<br>&nbsp; &nbsp; public partial class Form1 : Form<br>&nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; public Form1()<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; InitializeComponent();<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br><br>&nbsp; &nbsp; &nbsp; &nbsp; private void Form1_Load(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br><br>&nbsp; &nbsp; &nbsp; &nbsp; }<br><br>&nbsp; &nbsp; &nbsp; &nbsp; private void btnXoa_Click(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtKetqua.ResetText();<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtNhap.ResetText();<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp;&nbsp;<br>&nbsp; &nbsp; &nbsp; &nbsp; private string donvi (int n)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; switch (n)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; case 0: return "không";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; case 1: return "một";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; case 2: return "hai";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; case 3: return "ba";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; case 4: return "bốn";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; case 5: return "năm";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; case 6: return "sáu";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; case 7: return "bảy";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; case 8: return "tám";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; default: return "chín";<br><br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br><br>&nbsp; &nbsp; &nbsp; &nbsp; private string hangchuc (int n)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; switch (n)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; case 0: return "linh";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; case 1: return "mười";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; case 2: return "hai mươi";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; case 3: return "ba mươi";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; case 4: return "bốn mươi";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; case 5: return "năm mươi";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; case 6: return "sáu mươi";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; case 7: return "bảy mươi";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; case 8: return "tắm mươi";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; default: return "chín mươi";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp;&nbsp;<br>&nbsp; &nbsp; &nbsp; &nbsp; private string hangtran (int n)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; switch (n)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; case 0: return "không trăm";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; case 1: return "một trăm";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; case 2: return "hai trăm";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; case 3: return "ba trăm";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; case 4: return "bốn trăm";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; case 5: return "năm trăm";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; case 6: return "sáu trăm";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; case 7: return "bảy trăm";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; case 8: return "tám trăm";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; default: return "chín trăm";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br><br>&nbsp; &nbsp; &nbsp; &nbsp; private void btnThuchien_Click(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; string s, s1, s2, s3, k3, k1, k2;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; int d, c, t;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; s = txtNhap.Text;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (s.Length == 1)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; k1 = s.Substring(s.Length - 1, 1);<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; d = int.Parse(k1);<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; s1 = donvi(d);<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtKetqua.Text = s1;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else if (s.Length == 2)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; k1 = s.Substring(s.Length - 1, 1);<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; k2 = s.Substring(s.Length - 2, 1);<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; d = int.Parse(k1);<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; c = int.Parse(k2);<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; s1 = donvi(d);<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; s2 = hangchuc(c);<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtKetqua.Text = s2 + " " + s1 + " ";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br><br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else if (s.Length == 3)<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; k1 = s.Substring(s.Length - 1, 1);<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; k2 = s.Substring(s.Length - 2, 1);<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; k3 = s.Substring(s.Length - 3, 1);<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; d = int.Parse(k1);<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; c = int.Parse(k2);<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; t = int.Parse(k3);<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; s1 = donvi(d);<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; s2 = hangchuc(c);<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; s3 = hangtran(t);<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtKetqua.Text = s3 + " " + s2 + " " + s1;<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br><br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; else<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; txtKetqua.Text = "chưa lập trình tới";<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br><br>&nbsp; &nbsp; &nbsp; &nbsp; private void btnThoat_Click(object sender, EventArgs e)<br>&nbsp; &nbsp; &nbsp; &nbsp; {<br>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; this.Close();<br>&nbsp; &nbsp; &nbsp; &nbsp; }<br>&nbsp; &nbsp; }<br>}<br><br></div>]]></description>
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         <pubDate>2021-10-01 04:19:04 UTC</pubDate>
         <guid>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1783292902</guid>
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      <item>
         <title>https://xuanthulab.net/bien-hang-so-kieu-du-lieu-va-nhap-xuat-du-lieu-c-net-core.html</title>
         <author>hient940923</author>
         <link>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1941370866</link>
         <description><![CDATA[]]></description>
         <enclosure url="https://xuanthulab.net/bien-hang-so-kieu-du-lieu-va-nhap-xuat-du-lieu-c-net-core.html" />
         <pubDate>2021-12-11 03:26:19 UTC</pubDate>
         <guid>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1941370866</guid>
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      <item>
         <title>https://forms.gle/utewcB6PW2SfoC5x6</title>
         <author>hient940923</author>
         <link>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1941466175</link>
         <description><![CDATA[]]></description>
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         <pubDate>2021-12-11 06:37:58 UTC</pubDate>
         <guid>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1941466175</guid>
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         <title>https://forms.gle/kwFGa1fiRd8xmF1N7</title>
         <author>hient940923</author>
         <link>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1941466335</link>
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         <pubDate>2021-12-11 06:38:22 UTC</pubDate>
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      <item>
         <title>Lê Ngọc Thanh </title>
         <author></author>
         <link>https://padlet.com/hient940923/45ljym0g8lvbas7c/wish/1941502075</link>
         <description><![CDATA[<div>bài làm&nbsp;<br><br></div>]]></description>
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         <pubDate>2021-12-11 07:52:47 UTC</pubDate>
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