using System;

using System.Threading;

using System.Threading.Tasks;

​

public class Program

{

    public static void Method1(CancellationToken token)

    {

        Task.Run(async () =>

        {

            while (!token.IsCancellationRequested)

            {

                // do something

                await Task.Delay(500, token); // <- await with cancellation

                Console.WriteLine("Method1");

            }

        }

​

        , token);

    }

​

    public static void Method2(CancellationToken token)

    {

        Task.Run(async () =>

        {

            while (!token.IsCancellationRequested)

            {

                // do something

                await Task.Delay(300, token); // <- await with cancellation

                Console.WriteLine("Method2");

            }

        }

​

        , token);

    }

​

    public static void Main()

    {

        var source = new CancellationTokenSource();

        Method1(source.Token);

        Method2(source.Token);

        source.CancelAfter(3000);

        Thread.Sleep(5000);

    }

}