CSharp mimicking JavaScript design pattern

Simplest C# code so far I can think of equivalent to the JavaScript design pattern to allow private members.

The original JavaScript code can be found here:

http://www.crockford.com/javascript/private.html

For the ease of comparison, the JavaScript code from the above link is also pasted here,

function Container(param) {



    function dec() {

        if (secret > 0) {

            secret -= 1;

            return true;

        } else {

            return false;

        }

    }



    this.member = param;

    var secret = 3;

    var that = this;



    this.service = function () {

        return dec() ? that.member : null;

    };

}

Following is the equivalent C# code,

class Program

{

	class Container

	{

		// delegates

		delegate bool JsPrivateDelegate();

		public delegate dynamic ServiceDelegate();



		// constructor

		public Container(dynamic param)

		{

			var secret = 3;

			JsPrivateDelegate dec = delegate()

				{

					if (secret <= 0) return false;

					secret--;

					return true;

				};

			Member = param;

			Service = () => dec() ? Member : null;

		}



		public dynamic Member { get; private set; } // public property

		public ServiceDelegate Service { get; private set; }    // public 'method'

	}

	

	static void Main(string[] args)

	{

		var c = new Container("haha");

		dynamic s;

		do

		{

			s = c.Service();    // consumes the service

			Console.WriteLine("{0}", s ?? "<null>");

		} while (s != null);

	}

}

Note the main point is make private members local variables as long as possible since they are accessible from the closure which C# fully supports. However as a strong-typed language, C# can't get rid of the delegate definition and the local variable definition needs to be in order within a method ('secret' has to come before 'dec').