using System;

using System.ComponentModel;

using System.Threading;

​

namespace ConsoleApplication1

{

    public class Program

    {

        private static readonly BackgroundWorker Worker = new BackgroundWorker {WorkerSupportsCancellation = true, WorkerReportsProgress = true};

        private static readonly AutoResetEvent ResetEvent = new AutoResetEvent(false);

​

        public static void Main(string[] args)

        {

            Worker.DoWork += OnDoWork;

            Worker.RunWorkerCompleted += OnRunWorkerCompleted;

​

            Worker.RunWorkerAsync();

            Worker.CancelAsync();

​

            ResetEvent.WaitOne();

​

            Console.WriteLine("Reset Event Set");

​

            Console.ReadLine();

        }

​

        private static void OnDoWork(object sender, DoWorkEventArgs e)

        {

            Console.WriteLine("Starting");

​

            while (!e.Cancel)

            {                

                Thread.Sleep(2 * 1000);

​

                Console.WriteLine("Checking for cancellation");

​

                if (Worker.CancellationPending)

                {

                    Console.WriteLine("Cancelling");

                    e.Cancel = true;

                }

            }

        }

​

        private static void OnRunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)

        {

            if (e.Cancelled)

            {

                ResetEvent.Set();

            }

            Console.WriteLine("Completed.  Cancelled: {0}", e.Cancelled);

        }

    }

}