using System;

using System.Threading.Tasks;

public class Program

{

    public static void Main()

    {

        taskRun();

    }

        private static void taskRun()

    {

        var task1 = Task.Run(() => DoWork(1));

        Console.WriteLine("---1---");

        var task2 = Task.Run(() => DoWork(2));

        Console.WriteLine("---2---");

        var task3 = Task.Run(() => DoWork(3));

        Console.WriteLine("---3---");

        Console.WriteLine("------");

        var task4 = Task.Run(() => DoWork(4));

        var task5 = Task.Run(() => DoWork(5));

        Console.WriteLine("------");

    }

​

    private static void DoWork(int order)

    {

        //Thread.Sleep(durationMs);

        Console.WriteLine("Task "+ order + " executed");

    }

}