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装饰器模式主要组成部分/// <summary>/// 相当于Component/// </summary>public abstract class YinLiao{ public abstract double Cast();}/// <summary>/// 相当于ConcreteComponent/// </summary>public class MilkTea : YinLiao{ public override double Cast() { Console.WriteLine("奶茶10块钱一杯"); return 10; }}/// <summary>/// 相当于ConcreteComponent/// </summary>public class FruitTea : YinLiao{ public override double Cast() { Console.WriteLine("水果茶15块钱一杯"); return 15; }}/// <summary>/// 相当于ConcreteComponent/// </summary>public class SodaTea : YinLiao{ public override double Cast() { Console.WriteLine("苏打水4块钱一杯!"); return 4; }}/// <summary>/// 装饰器模式第壹个核心/// </summary>public abstract class Decorator : YinLiao{ /// <summary> /// 添加一个父类得引用 /// </summary> private YinLiao yinLiao; /// <summary> /// 通过set方法赋值 /// </summary> /// <param name="yinLiao"></param> public void SetComponent(YinLiao yinLiao) { this.yinLiao = yinLiao; } public override double Cast() { return this.yinLiao.Cast(); } }/// <summary>/// 相当于ConcreteDecorator/// </summary>public class BuDing : Decorator{ private static double money = 5; public override double Cast() { Console.WriteLine("布丁5块"); //第二个核心 return base.Cast() + money; }}/// <summary>/// 相当于ConcreteDecorator/// </summary>public class Zhenzhu : Decorator{ private static double money = 7; public override double Cast() { Console.WriteLine("珍珠7块"); //第二个核心 return base.Cast() + money; }}/// <summary>/// 相当于ConcreteDecorator/// </summary>public class XianCao : Decorator{ private static double money = 6; public override double Cast() { Console.WriteLine("仙草6块"); //第二个核心 return base.Cast() + money; }}
//C#控制台调用Console.WriteLine("装饰器设计模式!");MilkTea milkTea = new MilkTea();BuDing buDing1 = new BuDing();BuDing buDing2 =new BuDing();Zhenzhu zhenzhu = new Zhenzhu();buDing1.SetComponent(milkTea);buDing2.SetComponent(buDing1);zhenzhu.SetComponent(buDing2);Console.WriteLine(zhenzhu.Cast());
