using System;

using System.Threading.Tasks;

using System.Diagnostics;

public class Program

{

    public static void Main()

    {

        MainAsync().Wait();

    }

    static async Task MainAsync()

    {

        TimeSpan _timeout = TimeSpan.FromSeconds(1);

        var timeoutCancellationTokenSource = new System.Threading.CancellationTokenSource(_timeout);

​

        var sw = new Stopwatch();

        sw.Start();

        Task _t1 = asyncFunction("LINE 01", " ", " ", " ", 2000, timeoutCancellationTokenSource);

        try

        {

            await _t1;

        }

        catch (OperationCanceledException)

        {

            Console.WriteLine("Operation was cancelled");

        }

        sw.Stop();

        Console.WriteLine("Time taken: {0}", sw.Elapsed);

    }

    private static async Task asyncFunction(string line_1, string line_2, string line_3, string line_4, int _time, System.Threading.CancellationTokenSource _cts)

    {

        _cts.Token.ThrowIfCancellationRequested();

​

        await Task.Run(async () => {

            Console.WriteLine("{0},{1},{2},{3}", line_1, line_2, line_3, line_4);         

            Console.WriteLine("HELLO WORLD");

            await Task.Delay(_time, _cts.Token);

        });

    }

}