class Program

    {

        static void Main(string[] args)

        {

            Thread thread = new Thread(Work);

            thread.Start();

            Console.ReadLine();

            Pause();

            Console.ReadLine();

            Resume();

            Console.ReadLine();

            Pause();

            Console.ReadLine();

            Resume();

        }

        static ManualResetEvent wait_handle = new ManualResetEvent(true);

        static void Pause()

        {

            wait_handle.Reset();

        }

        static void Resume()

        {

            wait_handle.Set();

        }

        static private void Work()

        {

            while(true)

            {

                wait_handle.WaitOne();

                Console.WriteLine("running...");

            }

        }

    }