public delegate void DoHandler();public class Timeout{private ManualResetEvent mTimeoutObject;//标记变量private bool mBoTimeout;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){if (this.Do == null){return false;}this.mTimeoutObject.Reset();this.mBoTimeout = true; //标记this.Do.BeginInvoke(DoAsyncCallBack, null);// 等待 信号Setif (!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{this.Do.EndInvoke(result);// 指示方法的执行未超时this.mBoTimeout = false;}catch (Exception ex){Console.WriteLine(ex.Message);this.mBoTimeout = true;}finally{this.mTimeoutObject.Set();}}}

private static Stopwatch watch;private static System.Threading.Timer timer;static void Main(string[] args){watch = new Stopwatch();Timeout timeout = new Timeout();timeout.Do = new Program().DoSomething;watch.Start();timer = new System.Threading.Timer(timerCallBack, null, 0, 500);Console.WriteLine("4秒超时开始执行");bool bo = timeout.DoWithTimeout(new TimeSpan(0, 0, 0, 4));Console.WriteLine(string.Format("4秒超时执行结果,是否超时：{0}", bo));Console.WriteLine("***************************************************");timeout = new Timeout();timeout.Do = new Program().DoSomething;Console.WriteLine("6秒超时开始执行");bo = timeout.DoWithTimeout(new TimeSpan(0, 0, 0, 6));Console.WriteLine(string.Format("6秒超时执行结果,是否超时：{0}", bo));timerCallBack(null);watch.Stop();timer.Dispose();Console.ReadLine();}static void timerCallBack(object obj){Console.WriteLine(string.Format("运行时间:{0}秒", watch.Elapsed.TotalSeconds.ToString("F2")));}public void DoSomething(){// 休眠 5秒System.Threading.Thread.Sleep(new TimeSpan(0, 0, 0, 5));}