用异步的方式调用同步方法

using System.Text;

using System.Data;

using System.Data.SqlClient;

using System.Collections;

using System.Threading;

using System.IO;

using System.Runtime.InteropServices;

using System;

using System.Runtime.Remoting.Messaging;

namespace Test

{

class Program

{

delegate void mydelegate();

private void smork()

{

//方法1

AsyncCallback mycallback = new AsyncCallback(tellyou);//(回调函数)

mydelegate mdg = new mydelegate(move);

IAsyncResult result = mdg.BeginInvoke(mycallback, null);

result.AsyncWaitHandle.WaitOne();//等待异步完成

Console.WriteLine("异步调用后");

//方法2

//AsyncCallback mycallback = new AsyncCallback(tellyou);

//mydelegate mdg = new mydelegate(move);

//IAsyncResult result = mdg.BeginInvoke(mycallback, null);

//while (!result.IsCompleted)

//{

//    //Thread.Sleep(50);//不要与要有区别

//}

// 方法3(没有回调函数)

// mydelegate mdg = new mydelegate(move);

// IAsyncResult result = mdg.BeginInvoke(null, null);

// while (!result.IsCompleted)

// {

//     //Thread.Sleep(60);

// }

// mdg.EndInvoke(result); //停止调用

//方法4(没有回调函数)

//mydelegate mdg = new mydelegate(move);

//IAsyncResult result = mdg.BeginInvoke(null, null);

//result.AsyncWaitHandle.WaitOne();

//mdg.EndInvoke(result); //停止调用

}

public void move()

{

for (int i = 0; i < 5; i++)

{

Console.WriteLine("异步任务执行");

Thread.Sleep(1000);

}

}

public void tellyou(IAsyncResult result)//回调函数

{

AsyncResult asyncResult = result as AsyncResult;

mydelegate mydelegate = asyncResult.AsyncDelegate as mydelegate;

mydelegate.EndInvoke(result);

if (result.IsCompleted)

{

Console.WriteLine("异步任务完成");

}

}

static void Main(string[] args)

{

Program pr = new Program();

Console.WriteLine("开始执行..");

pr.smork();

Thread.Sleep(1000);//注释掉结果有点不同

Console.WriteLine("我是主线程");

Console.ReadLine();

}

}

}