ASP.NET 定時器回調方法的重入

話不多說，請看代碼：

using System;using System.Collections.Generic;using System.Text;namespace NET.MST.Sixth.Reenter{  class Reenter  {    //用來造成線程同步問題的靜態成員    private static int TestInt1=0;    private static int TestInt2 = 0;    private static object locko = new object();    static void Main(string[] args)    {      Console.WriteLine("System.Timers.Timer 回調方法重入測試：");      TimersTimerReenter();      //這裡確保已經開始的回調方法有機會結束      System.Threading.Thread.Sleep(2 * 1000);      Console.WriteLine("System.Threading.Timer 回調方法重入測試：");      ThreadingTimerReenter();      Console.Read();    }    /// <summary>    /// 展示System.Timers.Timer的回調方法重入    /// </summary>    static void TimersTimerReenter()    {      System.Timers.Timer timer = new System.Timers.Timer();      timer.Interval = 100;    //100毫秒      timer.Elapsed += TimersTimerHandler;      timer.Start();      System.Threading.Thread.Sleep(2 * 1000); //運行2秒      timer.Stop();    }    /// <summary>    /// 展示System.Threading.Timer的回調方法重入    /// </summary>    static void ThreadingTimerReenter()    {      //100毫秒      using (System.Threading.Timer timer = new System.Threading.Timer       (new System.Threading.TimerCallback(ThreadingTimerHandler), null, 0, 100))      {        System.Threading.Thread.Sleep(2 * 1000); //運行2秒      }    }    /// <summary>    /// System.Timers.Timer的回調方法    /// </summary>    /// <param name="sender"></param>    /// <param name="args"></param>    private static void TimersTimerHandler(object sender,EventArgs args)    {      lock (locko)      {        Console.WriteLine("測試整數：" + TestInt1.ToString());        //睡眠10秒，保證方法重入        System.Threading.Thread.Sleep(300);        TestInt1++;        Console.WriteLine("自增1後測試整數：" + TestInt1.ToString());      }    }    /// <summary>    /// System.Threading.Timer的回調方法    /// </summary>    /// <param name="state"></param>    private static void ThreadingTimerHandler(object state)    {      lock (locko)      {        Console.WriteLine("測試整數：" + TestInt2.ToString());        //睡眠10秒，保證方法重入        System.Threading.Thread.Sleep(300);        TestInt2++;        Console.WriteLine("自增1後測試整數：" + TestInt2.ToString());      }    }  }}