public static void Main() { 
        Console.WriteLine("Main thread: Start a second thread."); 
        // The constructor for the Thread class requires a ThreadStart 
        // delegate that represents the method to be executed on the 
        // thread. C# simplifies the creation of this delegate. 
        Thread t = new Thread(new ThreadStart(ThreadProc)); 

        // Start ThreadProc. Note that on a uniprocessor, the new 
        // thread does not get any processor time until the main thread 
        // is preempted or yields. Uncomment the Thread.Sleep that 
        // follows t.Start() to see the difference. 
        t.Start(); 
        //Thread.Sleep(0); 

        for (int i = 0; i < 4; i++) { 
            Console.WriteLine("Main thread: Do some work."); 
            Thread.Sleep(0); 
        } 

        Console.WriteLine("Main thread: Call Join(), to wait until ThreadProc ends."); 
        t.Join(); 
        Console.WriteLine("Main thread: ThreadProc.Join has returned. Press Enter to end program."); 
        Console.ReadLine(); 
    }