如何：创建和终止线程

摘自MSDN.

此示例演示如何创建辅助线程，并用它与主线程并行执行处理。还将演示如何使一个线程等待另一个线程，并正确地终止线程。

using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading; namespace MainThreadDemo { //由于此数据成员由 DoWork 方法来检查，因此这会间接导致 DoWork 返回，从而终止辅助线程。 //但是，需要注意：DoWork 和 RequestStop 将由不同线程执行。DoWork 由辅助线程执行， //而 RequestStop 由主线程执行，因此 _shouldStop 数据成员声明为 volatile //volatile 关键字指示一个字段可以由多个同时执行的线程修改。 //volatile 关键字用于通知编译器，将有多个线程访问 _shouldStop 数据成员，因此它不应当对此成员的状态做任何优化假设。 public class Worker { private volatile bool _shouldStop; /// <summary> /// 由辅助线程执行 /// </summary> public void DoWork() { while (!_shouldStop) { Console.WriteLine("worker Thread:working..."); } Console.WriteLine("worker thread: terminating gracefully."); } /// <summary> /// 由主线程执行 /// </summary> public void RequestStop() { this._shouldStop = true; } } class Program { static void Main(string[] args) { Worker workerObject = new Worker(); Thread workerThread = new Thread(workerObject.DoWork); workerThread.Start();//系统启动辅助线程 Console.WriteLine("main thread:Starting worker thread..."); while (!workerThread.IsAlive) Thread.Sleep(1); workerObject.RequestStop(); workerThread.Join(); Console.WriteLine("main thread: worker thread has terminated."); } } }

 

运行结果：

main thread:Starting worker thread...
worker Thread:working...
worker thread: terminating gracefully.
main thread: worker thread has terminated.