C# 超时类

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

namespace Interfaces_Helper
{
    public delegate string DoHandler(string HttpItemXml);

    public class TimeOut
    {
        private ManualResetEvent mTimeoutObject;
        //标记变量  
        private bool mBoTimeout;

        public string _Data = string.Empty;

        public DoHandler Do;

        public TimeOut()
        {
            //  初始状态为 停止  
            this.mTimeoutObject = new ManualResetEvent(true);
        }
        ///<summary>  
        /// 指定超时时间 异步执行某个方法  
        ///</summary>  
        ///<returns>执行 是否超时</returns>  
        public bool DoWithTimeout(TimeSpan timeSpan, string HttpItemXml)
        {
            if (this.Do == null)
            {
                return false;
            }
            this.mTimeoutObject.Reset();
            this.mBoTimeout = true; //标记  
            this.Do.BeginInvoke(HttpItemXml, DoAsyncCallBack, null);
            // 等待 信号Set  
            if (!this.mTimeoutObject.WaitOne(timeSpan, false))
            {
                this.mBoTimeout = true;
            }
            return this.mBoTimeout;
        }
        ///<summary>  
        /// 异步委托 回调函数  
        ///</summary>  
        ///<param name="result"></param>  
        private void DoAsyncCallBack(IAsyncResult result)
        {
            try
            {
                _Data = this.Do.EndInvoke(result);
                // 指示方法的执行未超时  
                this.mBoTimeout = false;
            }
            catch (Exception ex)
            {
                this.mBoTimeout = true;
            }
            finally
            {
                this.mTimeoutObject.Set();
            }
        }
    }  
}

        //调用
        string HttpItemXml = XmlUtil.ToBinary<HttpItem_>(item_);//参数
        TimeOut timeout = new TimeOut();
        timeout.Do = DoHttpCs;//要执行的方法名
        bool IsTimeOut = timeout.DoWithTimeout(new TimeSpan(0, 0, 0, 600), HttpItemXml);
        if (IsTimeOut)
        {
               //请求超时
               //...
        }
        else
        {
               //请求未超时
                        
        }

        private string DoHttpCs(string HttpItemXml)
        {
            // 休眠 5秒  
            //System.Threading.Thread.Sleep(new TimeSpan(0, 0, 0, 3));
            string Data = string.Empty;
            HttpItem_ item_ = XmlUtil.FromBinary<HttpItem_>(HttpItemXml);
            item_.CerPath = GetCerPath(item_.ProductCode);
            item_.Method = GetMethod(item_.IsPost);
            item_.ContentType = GetContentType(item_.ContentType);
            item_.Postdata = GetEncode(item_.IsEncode, item_.ProductCode, item_.Postdata);
            HttpResult_ result_ = null;
            Encoding PostEncoding_ = GetPostEncoding(item_.IsEncode, item_.ProductCode);
            HttpHelper http = new HttpHelper();
            HttpItem item = new HttpItem()
            {
                URL = item_.URL,//URL     必需项    
                Method = item_.Method,//URL     可选项 默认为Get
                Cookie = item_.Cookie,//字符串Cookie     可选项
                Postdata = item_.Postdata,//Post数据     可选项GET时不需要写   
                //Timeout = item_.Timeout,//连接超时时间     可选项默认为100000    
                //ReadWriteTimeout = item_.ReadWriteTimeout,//写入Post数据超时时间     可选项默认为30000   
                ContentType = item_.ContentType,//返回类型    可选项有默认值   
                CerPath = item_.CerPath,//证书绝对路径     可选项不需要证书时可以不写这个参数   
                Connectionlimit = item_.Connectionlimit,//最大连接数     可选项 默认为1024  
                Expect100Continue = item_.Expect100Continue,
                PostEncoding = PostEncoding_,//设置或获取Post参数编码,默认的为Default编码(平安用UTF-8)
                ResultType = item_.ResultType,//设置返回类型String和Byte
                ProxyIp = item_.Channel//代理服务器ID     可选项 不需要代理 时可以不设置这三个参数  
            };
            HttpResult result = null;

            try
            {
                result = http.GetHtml(item);
                result_ = new HttpResult_();
                result_.Html = result.Html;
                result_.Cookie = result.Cookie;
                result_.ServiceCookie = item_.Cookie;
                result_.ResultByte = result.ResultByte;
                if (result.Header != null && result.Header.Count > 0)
                {
                    if (result.Header["Location"] != null)
                    {
                        result_.Header_Location = result.Header["Location"].ToString();
                    }
                    if (result.Header["x-iCore_fa-digest"] != null)
                    {
                        result_.x_iCore_fa_digest = result.Header["x-iCore_fa-digest"].ToString();
                    }
                }
                if (result_.Html.Contains("302 Moved Temporarily") && item_.UseServerCookie == true)
                {
                    Data = "X_C_Er_0";
                }
                else if (result_.Html.Contains("无法连接到远程服务器"))
                {
                    Data = "X_C_Er_1";
                }
                else
                {
                    Data = result_.Html;
                    //Data = XmlUtil.ToBinary<HttpResult_>(result_);
                }

                return Data;
            }
            catch (Exception ex)
            {
                result_ = new HttpResult_();
                result_.Html = ex.Message;
                Data = XmlUtil.ToBinary<HttpResult_>(result_);
                return Data;
            }
            finally
            {
                Global.ClearMemory();
            }

        }