using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;
namespace _11._3._1
{
class Program
{
public delegate int FooDelegate(string s);
static void Main(string[] args)
{
Console.WriteLine("主线程" + Thread.CurrentThread.ManagedThreadId);
FooDelegate fooDelegate = Foo;
IAsyncResult result = fooDelegate.BeginInvoke("Hello World.", null, null);
Console.WriteLine("主线程继续执行...");
Console.WriteLine("结果是" );
//当使用BeginInvoke异步调用方法时,如果方法未执行完,EndInvoke方法就会一直阻塞,直到被调用的方法执行完毕,线程同步。
int n = fooDelegate.EndInvoke(result);
Console.WriteLine("回到主线程" + Thread.CurrentThread.ManagedThreadId);
Console.WriteLine("结果是" );
Console.ReadKey(true);
}
public static int Foo(string s)
{
Console.WriteLine("函数所在线程" + Thread.CurrentThread.ManagedThreadId);
Console.WriteLine("异步线程开始执行:" + s);
Thread.Sleep(1000);
return s.Length;
}
}
}
1、声明委托
2、委托实例化
3、用委托异步线程 BeginInovke
4、阻塞主线程 EndInovke