·c#之Thread实现暂停继续（转）

using System;  
using System.Windows.Forms;  
using System.Threading;  
  
namespace 线程暂停与继续实现  
{  
    public partial class Form1 : Form  
    {  
        //计时器  
        private System.Windows.Forms.Timer tm = new System.Windows.Forms.Timer();  
        //自动重置事件类    
        //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  
        AutoResetEvent autoEvent = new AutoResetEvent(false);  
  
        public Form1()  
        {  
            InitializeComponent();  
            ProgressBar.CheckForIllegalCrossThreadCalls = false;  
            tm.Interval = 1;  
            tm.Tick += new EventHandler(tm_Tick);  
        }  
  
        //计时器 事件  
        void tm_Tick(object sender, EventArgs e)  
        {  
            autoEvent.Set(); //通知阻塞的线程继续执行  
        }  
  
        //启动  
        private void btnStart_Click(object sender, EventArgs e)  
        {  
            tm.Start();  
  
            Thread t = new Thread(DoWork);  
            t.Start();  
        }  
          
        //在线程中执行的方法  
        private void DoWork()  
        {  
            while (progressBar1.Value < progressBar1.Maximum)  
            {  
                progressBar1.PerformStep();  
                autoEvent.WaitOne();  //阻塞当前线程，等待通知以继续执行  
            }  
        }  
  
        //暂停  
        private void btnSuspend_Click(object sender, EventArgs e)  
        {  
            tm.Stop();  
        }  
  
        //继续  
        private void btnResume_Click(object sender, EventArgs e)  
        {  
            tm.Start();  
        }  
    }  
}