Factory Method

using System;using System.Collections.Generic;using System.Linq;using System.Text;namespace Factory{ class Program { static void Main(string[] args) { // An array of creators Creator[] creators = new Creator[2]; creators[0] = new ConcreteCreatorA(); creators[1] = new ConcreteCreatorB(); // Iterate over creators and create products foreach (Creator creator in creators) { Product product = creator.FactoryMethod(); Console.WriteLine("Created {0}", product.GetType().Name); } // Wait for user Console.ReadKey(); } } /// <summary> /// The 'Product' abstract class /// </summary> abstract class Product { } /// <summary> /// A 'ConcreteProduct' class /// </summary> class ConcreteProductA : Product { } /// <summary> /// A 'ConcreteProduct' class /// </summary> class ConcreteProductB : Product { } /// <summary> /// The 'Creator' abstract class /// </summary> abstract class Creator { public abstract Product FactoryMethod(); } /// <summary> /// A 'ConcreteCreator' class /// </summary> class ConcreteCreatorA : Creator { public override Product FactoryMethod() { return new ConcreteProductA(); } } /// <summary> /// A 'ConcreteCreator' class /// </summary> class ConcreteCreatorB : Creator { public override Product FactoryMethod() { return new ConcreteProductB(); } }}