设计模式之五种PPT整理

using System; namespace DoFactory.GangOfFour.Abstract.Structural { /// <summary> /// MainApp startup class for Structural /// Abstract Factory Design Pattern. /// </summary> class MainApp { /// <summary> /// Entry point into console application. /// </summary> public static void Main() { // Abstract factory #1 AbstractFactory factory1 = new ConcreteFactory1(); Client client1 = new Client(factory1); client1.Run(); // Abstract factory #2 AbstractFactory factory2 = new ConcreteFactory2(); Client client2 = new Client(factory2); client2.Run(); // Wait for user input Console.Read(); } } // "AbstractFactory" abstract class AbstractFactory { public abstract AbstractProductA CreateProductA(); public abstract AbstractProductB CreateProductB(); } // "ConcreteFactory1" class ConcreteFactory1 : AbstractFactory { public override AbstractProductA CreateProductA() { return new ProductA1(); } public override AbstractProductB CreateProductB() { return new ProductB1(); } } // "ConcreteFactory2" class ConcreteFactory2 : AbstractFactory { public override AbstractProductA CreateProductA() { return new ProductA2(); } public override AbstractProductB CreateProductB() { return new ProductB2(); } } // "AbstractProductA" abstract class AbstractProductA { } // "AbstractProductB" abstract class AbstractProductB { public abstract void Interact(AbstractProductA a); } // "ProductA1" class ProductA1 : AbstractProductA { } // "ProductB1" class ProductB1 : AbstractProductB { public override void Interact(AbstractProductA a) { Console.WriteLine(this.GetType().Name + " interacts with " + a.GetType().Name); } } // "ProductA2" class ProductA2 : AbstractProductA { } // "ProductB2" class ProductB2 : AbstractProductB { public override void Interact(AbstractProductA a) { Console.WriteLine(this.GetType().Name + " interacts with " + a.GetType().Name); } } // "Client" - the interaction environment of the products class Client { private AbstractProductA AbstractProductA; private AbstractProductB AbstractProductB; // Constructor public Client(AbstractFactory factory) { AbstractProductB = factory.CreateProductB(); AbstractProductA = factory.CreateProductA(); } public void Run() { AbstractProductB.Interact(AbstractProductA); } } }