01.using System;
02.using System.Collections.Generic;
03.using System.ComponentModel;
04.using System.Data;
05.using System.Drawing;
06.using System.Linq;
07.using System.Text;
08.using System.Windows.Forms;
09.
10.namespace Q1_DDL_TX
11.{
12. public partial class Form1 : Form
13. {
14. public Form1()
15. {
16. InitializeComponent();
17. }
18.
19. private void Form1_Load(object sender, EventArgs e)
20. {
21. loadDD();
22. }
23.
24. private void loadDD()
25. {
26. var S = 5;
27. for (int i = 1; i <= S; i++)
28. {
29. comboBox1.Items.Add(i);
30. }
31. }
32. private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
33. {
34.
35. var s = Convert.ToInt32(comboBox1.SelectedItem.ToString());
36. for (int i = 0; i < s; i++)
37. {
38. TextBox textbox = new TextBox();
39. int count = panel1.Controls.OfType<TextBox>().ToList().Count; ;
40. textbox.Location = new System.Drawing.Point(60, 25 * count);
41. textbox.Size = new System.Drawing.Size(80, 20);
42. textbox.Name = "textbox_" + (count + 1);
43. textbox.TextChanged += new System.EventHandler(this.TextBox_Changed);
44. panel1.Controls.Add(textbox);
45.
46. }
47. }
48.
49. private void TextBox_Changed(object sender, EventArgs e)
50. {
51. throw new NotImplementedException();
52. }
53. }
54.}
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