.net设计模式之装饰模式（Decorator）_实用技巧_

 /// 
 /// 元件类 /// 被装饰的抽象对象 /// 
 public abstract class Component { /// 
 /// 对象的抽象操作 /// 
 public abstract void Operation(); } /// 
 /// 具体元件 /// 
 public class ConcreteComponent : Component { /// 
 /// 对象的具体操作 /// 
 public override void Operation() { Console.WriteLine("元件具体操作！"); } }

 /// 
 /// 装饰类 /// 装饰操作的抽象类 /// 
 public abstract class Decorator : Component { /// 
 /// 被装饰的元件 /// 
 protected Component component; /// 
 /// 设置元件 /// 
 /// 被装饰的对象 public void SetComponent(Component component) { this.component = component; } /// 
 /// 装饰操作 /// 重新Operation(),实际执行的是Component的Operation() /// 
 public override void Operation() { if (component != null) { component.Operation(); } } } /// 
 /// 具体装饰类A /// 
 public class ConcreteDecoratorA : Decorator { /// 
 /// 装饰A独有的属性 /// 区别其他装饰类 /// 
 private string addedState; /// 
 /// 装饰类B的操作 /// 
 public override void Operation() { base.Operation(); addedState = "我是装饰A"; Console.WriteLine(addedState); } } /// 
 /// 具体装饰类B /// 
 public class ConcreteDecoratorB : Decorator { /// 
 /// 装饰类B的独有操作 /// 区别其他装饰类 /// 
 private void AddedBehavior() { Console.WriteLine("装饰类B的独有操作"); } /// 
 /// 装饰类B的操作 /// 
 public override void Operation() { base.Operation(); AddedBehavior(); Console.WriteLine("装饰类B的操作"); } }

 ConcreteComponent cc = new ConcreteComponent(); Decorator cda = new ConcreteDecoratorA(); Decorator cdb = new ConcreteDecoratorB(); cda.SetComponent(cc); cdb.SetComponent(cda); cdb.Operation(); Console.WriteLine("*********************************");

 /// 
 /// 英雄抽象类 /// 
 public abstract class Hero { public string HeroName; public abstract void LearnSkill(); } /// 
 /// 具体英雄 /// 剑圣 /// 
 public class JUGG : Hero { public JUGG(string heroName) { HeroName = heroName; } public override void LearnSkill() { Console.WriteLine(HeroName + "学习了以上技能"); } }

 /// 
 /// 技能栏，继续学技能 /// 
 public abstract class SkillDecorator : Hero { private Hero hero; public string skillName; public SkillDecorator(Hero hero, string skillName) { this.hero = hero; this.skillName = skillName; } public override void LearnSkill() { if (hero != null) { hero.LearnSkill(); } } } /// 
 /// 具体的技能Q /// 
 public class QSkill : SkillDecorator { public QSkill(Hero hero, string skillName) : base(hero, skillName) { } public override void LearnSkill() { LearnQSkill(); base.LearnSkill(); } /// 
 /// Q 技能 特性 /// 
 public void LearnQSkill() { Console.WriteLine("学习了{0}技能！", skillName); } } /// 
 /// 具体的技能W /// 
 public class WSkill : SkillDecorator { public WSkill(Hero hero, string skillName) : base(hero, skillName) { } public override void LearnSkill() { LearnWSkill(); base.LearnSkill(); } /// 
 /// W 技能 特性 /// 
 public void LearnWSkill() { Console.WriteLine("学习了{0}技能！", skillName); } }

 Hero jugg = new JUGG("剑圣"); SkillDecorator q = new QSkill(jugg, "剑刃风暴"); SkillDecorator w = new WSkill(q, "治疗守卫"); w.LearnSkill();