Use Wait() and Pulse() to create a ticking clock : Monitor : Thread C# Examples

    
//C#  2.0  The  Complete  Reference

using  System;  
using  System.Threading;  

class  TickTock  {  
    public  void  tick(bool  running)  {  
        lock(this)  {  
            if(!running)  {  //  stop  the  clock  
                Monitor.Pulse(this);  //  notify  any  waiting  threads  
                return;  
            }  
  
            Console.Write("Tick  ");  
            Monitor.Pulse(this);  //  let  tock()  run  

            Monitor.Wait(this);  //  wait  for  tock()  to  complete  
        }  
    }  
  
    public  void  tock(bool  running)  {  
        lock(this)  {  
            if(!running)  {  //  stop  the  clock  
                Monitor.Pulse(this);  //  notify  any  waiting  threads  
                return;  
            }  
  
            Console.WriteLine("Tock");  
            Monitor.Pulse(this);  //  let  tick()  run  
  
            Monitor.Wait(this);  //  wait  for  tick()  to  complete  
        }  
    }  
}    
  
class  MyThread  {  
    public  Thread  thrd;  
    TickTock  ttOb;  
  
    //  Construct  a  new  thread.  
    public  MyThread(string  name,  TickTock  tt)  {  
        thrd  =  new  Thread(this.run);  
        ttOb  =  tt;  
        thrd.Name  =  name;  
        thrd.Start();    
    }  
  
    //  Begin  execution  of  new  thread.  
    void  run()  {  
        if(thrd.Name  ==  "Tick")  {  
            for(int  i=0;  i<5;  i++)  ttOb.tick(true);  
            ttOb.tick(false);  
        }  
        else  {  
            for(int  i=0;  i<5;  i++)  ttOb.tock(true);  
            ttOb.tock(false);  
        }  
    }  
}  
  
class  TickingClock  {  
    public  static  void  Main()  {  
        TickTock  tt  =  new  TickTock();  
        MyThread  mt1  =  new  MyThread("Tick",  tt);  
        MyThread  mt2  =  new  MyThread("Tock",  tt);  
  
        mt1.thrd.Join();  
        mt2.thrd.Join();  
        Console.WriteLine("Clock  Stopped");  
    }  
}