Mega Code Archive
Starting and stopping a thread
<![CDATA[
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Threading;
public class Form1 : System.Windows.Forms.Form {
private System.Windows.Forms.Button button1;
private System.Windows.Forms.Button button2;
private System.Windows.Forms.Label label1;
private System.Windows.Forms.Label label2;
private System.Windows.Forms.Label NumThreads;
private System.Windows.Forms.Label Counter;
private int fCounter;
private ArrayList fThreadList;
private System.ComponentModel.Container components = null;
public Form1() {
InitializeComponent();
fThreadList = new ArrayList();
}
protected override void Dispose(bool disposing) {
if (disposing) {
if (components != null) {
components.Dispose();
for (int i = 0; i < fThreadList.Count; ++i) {
Thread fThread = (Thread)fThreadList[i];
fThread.Abort();
}
}
}
base.Dispose(disposing);
}
private void InitializeComponent() {
this.button1 = new System.Windows.Forms.Button();
this.button2 = new System.Windows.Forms.Button();
this.label1 = new System.Windows.Forms.Label();
this.label2 = new System.Windows.Forms.Label();
this.NumThreads = new System.Windows.Forms.Label();
this.Counter = new System.Windows.Forms.Label();
this.SuspendLayout();
this.button1.Location = new System.Drawing.Point(32, 104);
this.button1.Name = "button1";
this.button1.TabIndex = 0;
this.button1.Text = "&Start";
this.button1.Click += new
System.EventHandler(this.button1_Click);
this.button2.Location = new System.Drawing.Point(136, 104);
this.button2.Name = "button2";
this.button2.Size = new System.Drawing.Size(88, 24);
this.button2.TabIndex = 1;
this.button2.Text = "&Stop";
this.button2.Click += new
System.EventHandler(this.button2_Click);
this.label1.Location = new System.Drawing.Point(32, 40);
this.label1.Name = "label1";
this.label1.Size = new System.Drawing.Size(152, 16);
this.label1.TabIndex = 2;
this.label1.Text = "Number of Threads Running:";
this.label2.Location = new System.Drawing.Point(32, 64);
this.label2.Name = "label2";
this.label2.Size = new System.Drawing.Size(100, 16);
this.label2.TabIndex = 3;
this.label2.Text = "Counter:";
this.NumThreads.Location = new System.Drawing.Point(192, 40);
this.NumThreads.Name = "NumThreads";
this.NumThreads.Size = new System.Drawing.Size(64, 16);
this.NumThreads.TabIndex = 4;
this.Counter.Location = new System.Drawing.Point(192, 64);
this.Counter.Name = "Counter";
this.Counter.Size = new System.Drawing.Size(64, 16);
this.Counter.TabIndex = 5;
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(272, 165);
this.Controls.AddRange(new System.Windows.Forms.Control[] {
this.Counter,
this.NumThreads,
this.label2,
this.label1,
this.button2,
this.button1});
this.ResumeLayout(false);
}
[STAThread]
static void Main() {
Application.Run(new Form1());
}
protected void ThreadFunc() {
Boolean done = false;
while (!done) {
Thread.Sleep(1000);
fCounter++;
this.Counter.Text = fCounter.ToString();
}
}
private void button1_Click(object sender, System.EventArgs e) {
Thread fThread = new Thread(new ThreadStart(ThreadFunc));
fThread.Start();
fThreadList.Add(fThread);
this.NumThreads.Text = fThreadList.Count.ToString();
}
private void button2_Click(object sender, System.EventArgs e) {
Thread fThread = (Thread)fThreadList[fThreadList.Count - 1];
fThread.Abort();
fThreadList.Remove(fThread);
this.NumThreads.Text = fThreadList.Count.ToString();
}
}
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