C# 使用线程开始计时(代替timer控件)

private void Exittime()
{
      Thread thread = new Thread(new ThreadStart(ExittimeThread));
       thread.IsBackground = true;//后台执行线程
       thread.Start();//开始线程
}

public void ExittimeThread()
{
    long second = 60 * 60;//倒计一分钟
     while (true)
      {
          second--;               
          if (second <= 0)
          {
               Application.Exit();//计时完成后推出应用程序
          }
          Thread.Sleep(1000);
      }
}