C#的多线程机制初探(2)_C#教程

下面我们就动手来创建一个线程，使用Thread类创建线程时，只需提供线程入口即可。线程入口使程序知道该让这个线程干什么事，在C#中，线程入口是通过ThreadStart代理（delegate）来提供的，你可以把ThreadStart理解为一个函数指针，指向线程要执行的函数，当调用Thread.Start()方法后，线程就开始执行ThreadStart所代表或者说指向的函数。

打开你的VS.net，新建一个控制台应用程序（Console Application），下面这些代码将让你体味到完全控制一个线程的无穷乐趣！

//ThreadTest.cs

using System;

using System.Threading;

namespace ThreadTest

{

public class Alpha

{

public void Beta()

{

while (true)

{

Console.WriteLine("Alpha.Beta is running in its own thread.");

}

}

};

public class Simple

{

public static int Main()

{

Console.WriteLine("Thread Start/Stop/Join Sample");

Alpha oAlpha = new Alpha();

//这里创建一个线程，使之执行Alpha类的Beta()方法

Thread oThread = new Thread(new ThreadStart(oAlpha.Beta));

oThread.Start();

while (!oThread.IsAlive);

Thread.Sleep(1);

oThread.Abort();

oThread.Join();

Console.WriteLine();

Console.WriteLine("Alpha.Beta has finished");

try

{

Console.WriteLine("Try to restart the Alpha.Beta thread");

oThread.Start();

}

catch (ThreadStateException)

{

Console.Write("ThreadStateException trying to restart Alpha.Beta. ");

Console.WriteLine("Expected since aborted threads cannot be restarted.");