.NET中定时器

public class DoSome
    {
        public  Timer timer;
        public Action TimerAction { get; set; }

        public DoSome(double dt)
        {
            timer = new System.Timers.Timer(dt);
            timer.Enabled = true;
            timer.Elapsed += new ElapsedEventHandler(DoTimerEvent);
        }

        public void DoTimerEvent(object sender, ElapsedEventArgs e)
        {
            if (TimerAction != null)
            {
                TimerAction();
            }
        }

        public void Wt()
        {
            Console.WriteLine("一秒执行一次。");
        }

        public void Wt3()
        {
            Console.WriteLine("三秒执行一次。");
        }
    }


class Program
 {
        static void Main(string[] args)
  {
            DoSome dosome = new DoSome(1000);
            dosome.TimerAction = dosome.Wt;

            DoSome dosome1 = new DoSome(3000);
            dosome1.TimerAction = dosome1.Wt3;

            Console.ReadKey();
  }
         
 }