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  1. using System;
  2. using System.Windows.Forms;
  3. using System.Threading;
  4.  
  5. namespace InvokeTest
  6. {
  7.     public partial class Form1 : Form
  8.     {
  9.         public Form1()
  10.         {
  11.             InitializeComponent();
  12.         }
  13.  
  14.         /* デザイナ側のDisposeに追加
  15.         protected override void Dispose(bool disposing)
  16.         {
  17.             if (disposing && th != null)
  18.             {
  19.                 th.Interrupt();
  20.                 th.Join();
  21.             }
  22.             ...
  23.         }
  24.         */
  25.  
  26.         Thread th;
  27.         private void button1_Click(object sender, EventArgs e)
  28.         {
  29.             if (th == null)
  30.             {
  31.                 th = new Thread(() =>
  32.                 {
  33.                     try
  34.                     {
  35.                         String s;
  36.                         this.Invoke((MethodInvoker)(() => s = textBox1.Text));
  37.                         int st = 0;
  38.                         int.TryParse(textBox1.Text, out st);
  39.                         for (int i = st; ; i++)
  40.                         {
  41.                             this.Invoke((MethodInvoker)(() => { textBox1.Text = "" + i; }));
  42.                             //this.BeginInvoke((MethodInvoker)(() => { textBox1.Text = "" + i; }));
  43.                         }
  44.                     }
  45.                     catch (ThreadInterruptedException) { }
  46.                 });
  47.                 th.Start();
  48.                 button1.Text = "停止";
  49.             }
  50.             else
  51.             {
  52.                 th.Interrupt();
  53.                 th.Join();
  54.                 th = null;
  55.                 button1.Text = "開始";
  56.             }
  57.         }
  58.     }
  59. }
  60.  
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https://ideone.com/ObJ98
language:
C# (gmcs 5.20.1)
created:
12 years ago
visibility:
secret

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