Strategy Pattern

gistfile1.cs

using System;

namespace Bolar
{
    class Program
    {
        static void Main(string[] args)
        {
            Bora.BolarUmBong.MandaVer();
            Bora.BolarUmFino.MandaVer();

            Console.ReadKey();
        }

        public class Bora
        {
            private static Bora singleton;

            static Bora()
            {
                singleton = new Bora();
            }

            private BoladorDeBong boladorDeBong;
            private BoladorDeFino boladorDeFino;

            public Bora()
            {
                boladorDeBong = new BoladorDeBong();
                boladorDeFino = new BoladorDeFino();
            }

            public static BoladorDeBong BolarUmBong
            {
                get { return singleton.boladorDeBong; }
            }

            public static BoladorDeFino BolarUmFino
            {
                get { return singleton.boladorDeFino; }
            }
        }

        public abstract class Bolador
        {
            public abstract void MandaVer();
        }

        public class BoladorDeBong : Bolador
        {
            public override void MandaVer()
            {
                Console.WriteLine("BONG: ########### ~~~~~~~~");
            }
        }

        public class BoladorDeFino : Bolador
        {
            public override void MandaVer()
            {
                Console.WriteLine("FINO: ----- ~~~");
            }
        }
    }
}