通过set和waitOne来控制子线程的运行和停止

 1  public partial class Form1 : Form
 2     {
 3      
 4         //自动重置事件类     
 5         //主要用到其两个方法 WaitOne() 和 Set() , 前者阻塞当前线程，后者通知阻塞线程继续往下执行   
 6         AutoResetEvent autoEvent = new AutoResetEvent(false);
 7 
 8         public Form1()
 9         {
10             InitializeComponent();
11         }
12         public static bool _stop=true;
13         private void button3_Click(object sender, EventArgs e)
14         {
15             int i = 0;
16             Thread NewThread = new Thread(Run);
17             NewThread.Start(i);
18         }
19         private void Run(object i)
20         {
21             Control.CheckForIllegalCrossThreadCalls = false;
22             int j = (int)i;
23            
24             while (true)
25             {
26                 j++;
27                 Thread.Sleep(1000);
28                 label1.Text = j.ToString();
29                 label1.Refresh();
30                 if(_stop)
31                    autoEvent.WaitOne();  //阻塞当前线程，等待通知以继续执行 
32             }
33         
34         }
35 
36         private void button1_Click(object sender, EventArgs e)
37         {
38             autoEvent.Set(); //通知阻塞的线程继续执行  
39             _stop = false;
40         }
41 
42         private void button2_Click(object sender, EventArgs e)
43         {
44             _stop = true;
45         }
46     }