using System;

using System.Threading;

using System.Threading.Tasks;

public class Program

{

    public static async Task Main(string[] args)

    {

        Console.WriteLine("1");

        await MyPromiseAsync();

        Console.WriteLine("2");

    }

​

    public static async Task MyPromiseAsync()

    {

        Console.WriteLine("3");

        await Task.FromResult("Result");

        Console.WriteLine("4");

        Thread.Sleep(1000);

        Console.WriteLine("5");

    }

}