BeginInvoke()使用

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
using System.Runtime.Serialization.Formatters.Binary;
using System.Xml;
using System.Threading;
namespace ConsoleApplication1

{

class Program

{

static void Main(string[] args)

{

Console.WriteLine("Client application is starting!");

Thread.CurrentThread.Name = "Main Thread";

Cal cal = new Cal();

AddDelegate del = new AddDelegate(cal.Add);
// 需要保存 IAsyncResult 对象以便后边条用EndInvoke方法时作参数传递

IAsyncResult asyncResult = del.BeginInvoke(5, 6, null, null);
// 做某些其它的事情，模拟需要执行 3 秒钟

for (int i = 1; i <= 3; i++)

{

Thread.Sleep(TimeSpan.FromSeconds(i));

Console.WriteLine("{0}: Client executed {1} second(s).", Thread.CurrentThread.Name, i);

}
// 传递 IAsyncResult 对象

int rtnVal = del.EndInvoke(asyncResult);

Console.WriteLine("Result: {0}\n", rtnVal);
Console.WriteLine("\nPress any key to exit...");

Console.ReadLine();
}
public delegate int AddDelegate(int a, int b);
public class Cal

{

public int Add(int a, int b)

{

if (Thread.CurrentThread.IsThreadPoolThread)

{

Thread.CurrentThread.Name = "Pool Thread";

}

Console.WriteLine("Method invoked!");
// 做某些其它的事情，模拟需要执行 2 秒钟

for (int i = 0; i < 2; i++)

{

Thread.Sleep(TimeSpan.FromSeconds(1));

Console.WriteLine("{0}: Add executed {1} second(s).", Thread.CurrentThread.Name, i);

}

Console.WriteLine("Method complete!");

return a + b;

}

}

}

}