using System;

using System.Threading;             

​

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

        ThreadStart s = () => Console.WriteLine("In s: {0}", Thread.CurrentThread.ManagedThreadId);

        Console.WriteLine("Before s.Invoke: {0}", Thread.CurrentThread.ManagedThreadId);

        s.Invoke();

        Console.WriteLine("After s.Invoke: {0}", Thread.CurrentThread.ManagedThreadId);

    }

}