等待句柄判断异步委托完成

时间2024-01-25 13:34:23发布访客分类HTML浏览872

导读：收集整理的这篇文章主要介绍了html5教程-等待句柄判断异步委托完成，觉得挺不错的，现在分享给大家，也给大家做个参考。小宝典致力于为广大程序猿（媛）提供高品质的代码服务，请大家多多光顾小站，小宝典在此谢过。通过AsyncWatiHand...

收集整理的这篇文章主要介绍了html5教程-等待句柄判断异步委托完成，觉得挺不错的，现在分享给大家，也给大家做个参考。小宝典致力于为广大程序猿（媛）提供高品质的代码服务，请大家多多光顾小站，小宝典在此谢过。

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 Completed!");
            return ++data;
        }
    }
}

运行结果：

ar.AsyncWaitHandle.WaitOne()阻断了当前线程，直到异步调用线程完成获得可以利用的句柄以后再次执行当前线程。

作者：xuhongwei0411

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 Completed!");
            return ++data;
        }
    }
}

运行结果：

ar.AsyncWaitHandle.WaitOne()阻断了当前线程，直到异步调用线程完成获得可以利用的句柄以后再次执行当前线程。

作者：xuhongwei0411

觉得可用，就经常来吧！欢迎评论哦！ html5教程，巧夺天工，精雕玉琢。小宝典献丑了！

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