using System;

​

public class Test

{

    public static void Main()

    {

        Action action = CreateAction();

        action();

        action();

    }

​

    static Action CreateAction()

    {

        int counter = 0;

        return delegate

        {

            // Yes, it could be done in one statement; 

            // but it is clearer like this.

            counter++;

            Console.WriteLine("counter={0}", counter);

        };

    }

}