Sunji-posv-net/pos/POSV.Core/FastHttpRequest/IAsyncResultExtensions.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;

namespace POSV.HttpRequest
{
    /// <summary>
    /// IAsyncResultExtensions
    /// </summary>
    public static class IAsyncResultExtensions
    {
        /// <summary>
        /// 异步编程带超时
        /// </summary>
        /// <param name="asyncResult">IAsyncResult</param>
        /// <param name="endMethod">回调函数</param>
        /// <param name="timeout">超时</param>
        public static void FromAsync(this IAsyncResult asyncResult, Action<IAsyncResult, bool> endMethod, TimeSpan? timeout) {
            int timeoutValue = -1;
            if (timeout.HasValue) {
                timeoutValue = Convert.ToInt32(timeout.Value.TotalMilliseconds);
            }

            //向线程池添加一个可以定时执行的方法
            ThreadPool.RegisterWaitForSingleObject(asyncResult.AsyncWaitHandle,
                (s, isTimedout) => endMethod(asyncResult, isTimedout), null,
                timeoutValue, true);
        }

    }
}