using System;

using System.Threading;

​

public class Program

{

    public class Writer

    {

        private volatile bool _canStop;

        public Writer()

        {

          _canStop = false;

        }

        public void Write()

        {

            while (!_canStop)

            {

               //Console.WriteLine("writing");

            }

            Console.WriteLine("stop writing");

        }

        public void StopWrite()

        {

            _canStop = true;

        }

    }

    public static void Main()

    {

            Writer writer = new Writer();

            Thread thread = new Thread(writer.Write);

            thread.Start();

            Console.WriteLine("Writing start");

            while (!thread.IsAlive) ;

            Thread.Sleep(1);

            writer.StopWrite();

            thread.Join();

            Console.WriteLine("Finish of demonstration");

    }

}