using System;

using System.Threading.Tasks;

using System.Threading;

public class Program

{

    public static async void Main()

    {

        var tasks = new[] {

            Task.Factory.StartNew(() => GetSomething1()), 

            Task.Factory.StartNew(() => GetSomething2()), 

            Task.Factory.StartNew(() => GetSomething3())

        };

        await Task.WhenAll(tasks);

        Console.WriteLine(DateTime.Now.ToLongTimeString());

        Console.WriteLine(tasks[0].Result);

        Console.WriteLine(tasks[1].Result);

        Console.WriteLine(tasks[2].Result);

        Console.WriteLine(DateTime.Now.ToLongTimeString());

    }

​

    public static int GetSomething1() { System.Threading.Thread.Sleep(100); return 1; }

    public static int GetSomething2() { return 22; }

    public static int GetSomething3() { return 333; }

}