using System; using System.Collections.Generic; using System.Linq; using System.Text; namespace 装饰者 { class Program { static void Main(string[] args) { ConcreteComponent con = new ConcreteComponent(); ConcreteDecoratorA a = new ConcreteDecoratorA(); a.SetComponent(con); a.Operation(); a.AddBehavior(); Console.WriteLine("============================"); ConcreteDecoratorB B = new ConcreteDecoratorB(); B.SetComponent(a); a.AddBehavior(); B.Operation(); B.AddBehavior(); } public abstract class Component { public abstract void Operation(); } abstract class Decorator : Component { private Component component; public void SetComponent(Component component) { this.component = component; } public override void Operation() { if (component != null) { component.Operation(); } } } class ConcreteDecoratorA : Decorator { public override void Operation() { base.Operation(); } public void AddBehavior() { Console.WriteLine("装饰A类的操作！"); } } class ConcreteDecoratorB : Decorator { public override void Operation() { base.Operation(); } public void AddBehavior() { Console.WriteLine("装饰B类的操作！"); } } public class ConcreteComponent : Component { public override void Operation() { Console.WriteLine("具体对象的操作！"); } } } }