using System;

using System.Threading;

using System.Threading.Tasks;

​

namespace ConsoleApplication

{

    public class Program

    {

        static async Task TestAsync()

        {

            var ct = new CancellationTokenSource(millisecondsDelay: 1000);

            var token = ct.Token;

​

            // start task1

            var task1 = Task.Run(() =>

            {

                for (var i = 0; ; i++)

                {

                    Thread.Sleep(i); // simulate work item #i

                    token.ThrowIfCancellationRequested();

                }

            });

​

            // start task2

            var task2 = Task.Run(() =>

            {

                for (var i = 0; i < 1000; i++)

                {

                    Thread.Sleep(i); // simulate work item #i

                    token.ThrowIfCancellationRequested();

                }

            });

​

​

            // await task1

            try

            {

                await task1;

            }

            catch (Exception ex)

            {

                Console.WriteLine(new { task = "task1", ex.Message, task1.Status });

            }

​

            // await task2

            try

            {

                await task2;

            }

            catch (Exception ex)

            {

                Console.WriteLine(new { task = "task2", ex.Message, task2.Status });

            }

        }

​

        public static void Main(string[] args)

        {

            TestAsync().Wait();

            Console.WriteLine("Enter to exit...");

            Console.ReadLine();

        }

    }

}

​