Use Monitor to control more than one Threads : Monitor : Thread C# Examples

    
using  System;
using  System.Threading;

class  MyClass
{
    private  int  counter;

    public  void  DoSomeWork()
    {
        lock(this)
        {
            counter++;
            //  Do  the  work.
            for(int  i  =  0;  i  <  5;  i++)
            {
                Console.WriteLine("counter:  {0},  i:  {1},  current  thread:  {2}",
                    counter,  i,  Thread.CurrentThread.Name);
                Thread.Sleep(1000);
            }
        }
    }
}

public  class  MainClass
{
    public  static  int  Main(string[]  args)
    {
        MyClass  w  =  new  MyClass();

        Thread  workerThreadA  =  new  Thread(new  ThreadStart(w.DoSomeWork));
        workerThreadA.Name  =  "A";
        Thread  workerThreadB  =  new  Thread(new  ThreadStart(w.DoSomeWork));
        workerThreadB.Name  =  "B";
        Thread  workerThreadC  =  new  Thread(new  ThreadStart(w.DoSomeWork));
        workerThreadC.Name  =  "C";

        //  Now  start  each  one.
        workerThreadA.Start();
        workerThreadB.Start();
        workerThreadC.Start();
        
        return  0;
    }
}