线程的异步调用 异步委托的实现

using System;

using System.Threading;

namespace DelegateThread

{

class MainThread

{

static void Main(string[] args)

{

DelegateThread thisThread;

DelegateThreadContent thisClass = new DelegateThreadContent();

thisThread = thisClass.DelegateThreadMethodContent;

//Begin the thread

//Call back the method "CallBackMethod"

//Send the object "thisThread" to the property "AsyncState"

IAsyncResult thisResult=thisThread.BeginInvoke(3000,DelegateThreadContent.CallBackMethod,thisThread);

//Execute the main thread

while (!thisResult.IsCompleted)

{

//Set 50 as the time out time.

//If thread haven't completed after 50, return false.

if(!thisResult.AsyncWaitHandle.WaitOne(50,false))

{

Console.Write(".");

}

}

Console.ReadKey();

}

}

delegate void DelegateThread(int time);

class DelegateThreadContent

{

public static void CallBackMethod(IAsyncResult asyncResult)

{

DelegateThread currentDelegateThread = asyncResult.AsyncState as DelegateThread;

Console.WriteLine("Type Of Current Thread:{0}",currentDelegateThread.GetType());

//We can get the thread result by method EndInvoke

currentDelegateThread.EndInvoke(asyncResult);

}

public void DelegateThreadMethodContent(int time)

{

Console.WriteLine("Delegate Thread Started...");

Thread.Sleep(time);

Console.WriteLine("/nDelegate Thread Ended...");

}

}

}