等待句柄判断异步委托完成
通过AsyncWatiHandle属性，访问等待句柄。WaitOne()方法阻断当前线程，直到异步调用线程完成返回可以利用的句柄以后再执行当前线程。
程序：
[html]
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;
namespace AsyncDelegate
{
class Program
{
public delegate int TakeSomeTimeDelegate(int data,int ms);
static void Main(string[] args)
{
TakeSomeTimeDelegate dl=TakeSomeTime;
IAsyncResult ar=dl.BeginInvoke(1,200,null,null);
while (true)
{
Console.WriteLine(".");
Console.WriteLine("Run in thread:" + Thread.CurrentThread.ManagedThreadId);
if (ar.AsyncWaitHandle.WaitOne(100, false))
{
Console.WriteLine("Can get the result now");
break;
}
}
//while (!ar.IsCompleted)
//{
// Console.WriteLine(".");
// Console.WriteLine("Run in thread:" + Thread.CurrentThread.ManagedThreadId);
// Thread.Sleep(50);
//}
int result = dl.EndInvoke(ar);
Console.WriteLine("Result:{0}", result);
}
static int TakeSomeTime(int data, int ms)
{
Console.WriteLine("TakeSomeTime started!");
Console.WriteLine("Run in thread:"+Thread.CurrentThread.ManagedThreadId);
Thread.Sleep(ms);
Console.WriteLine("TakeSomeTime Completed!");
return ++data;
}
}
}
[html]
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;
namespace AsyncDelegate
{
class Program
{
public delegate int TakeSomeTimeDelegate(int data,int ms);
static void Main(string[] args)
{
TakeSomeTimeDelegate dl=TakeSomeTime;
IAsyncResult ar=dl.BeginInvoke(1,200,null,null);
while (true)
{
Console.WriteLine(".");
Console.WriteLine("Run in thread:" + Thread.CurrentThread.ManagedThreadId);
if (ar.AsyncWaitHandle.WaitOne(100, false))
{
Console.WriteLine("Can get the result now");
break;
}
}
//while (!ar.IsCompleted)
//{
// Console.WriteLine(".");
// Console.WriteLine("Run in thread:" + Thread.CurrentThread.ManagedThreadId);
// Thread.Sleep(50);
//}
int result = dl.EndInvoke(ar);
Console.WriteLine("Result:{0}", result);
}
static int TakeSomeTime(int data, int ms)
{
Console.WriteLine("TakeSomeTime started!");
Console.WriteLine("Run in thread:"+Thread.CurrentThread.ManagedThreadId);
Thread.Sleep(ms);
Console.WriteLine("TakeSomeTime Com
补充：web前端 , HTML 5 ,
