using System;

using System.Threading;

using System.Threading.Tasks;

using System.Linq;

using System.Collections.Generic;

​

public static class Program

{

    public static void Main()

    {

        var actions = new List<Action>();

        for (int i = 0; i < 10; i++)

        {

            actions.Add(() => DoSomething(i));

        }

        Parallel.Invoke(actions.ToArray());

    }

    private static void DoSomething(int number)

    {

        Console.WriteLine(string.Format("DoSomething number {0}", number));

        Thread.Sleep(5000);

    }

}

​