using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

​

namespace factory

{

    public class FactoryMethod

    {

        public interface ISorvete

        {

            string Functionality();

        }

        public class SorveteChocolate : ISorvete

        {

            public string Functionality()

            {

                return "Sorvete de Chocolate";

            }

        }

        public class SorveteBaunilha : ISorvete

        {

            public string Functionality()

            {

                return "Sorvete de Baunilha";

            }

        }

        class SorveteMorango : ISorvete

        {

            public string Functionality()

            {

                return "Sorvete de Morango";

            }

        }

​

        public static class Factory

        {

            /// <summary>

            /// This is the Factory method

            /// </summary>

            public static ISorvete Get(int id)

            {

                switch (id)

                {

                    case 0:

                        return new SorveteChocolate();

                    case 1:

                        return new SorveteBaunilha();

                    case 2:

                        return new SorveteMorango();

                    default:

                        return null;

                }

            }

        }

​

        public static void Main()

        {

            for (int i = 0; i <= 3; i++)

            {

                var type = Factory.Get(i);

                if (type != null)

                {

                    Console.WriteLine("O produto "+i+" é do tipo: " + type.Functionality());

                }

            }

        }

    }

}

​