using System;

using System.Threading.Tasks;

​

public class Example

{

   public static void Main(string[] args)

    {

        var task = DoWork();

        Console.WriteLine("DoWork called");

        // We call .Result because Main cannot be async

        Console.WriteLine(task.Result);

        Console.ReadLine();

    }

    static Task<int> DoWork()

    {

        var tcs = new TaskCompletionSource<int>();

        Task.Run(async () =>

        {

            await Task.Delay(1000);

            tcs.SetResult(6);

        });

        return tcs.Task;

    }

}