装饰模式

        装饰模式(Decorator)，动态地给一个对象添加一些额外的职责，就增加功能来说，装饰模式比生成子类更为灵活。

以下是装饰模式的例子：

具体代码：

Person.cs

 1 namespace DecorativePattern
 2 {
 3     class Person
 4     {
 5         public Person()
 6         {  }
 7         private string name;
 8         public Person(string name)
 9         {
10             this.name = name;
11         }
12         public virtual void Show()
13         {
14             Console.WriteLine("装扮的{0}", name);
15         }
16     }
17 }

Finery.cs

 1 namespace DecorativePattern
 2 {
 3     //服饰类
 4     class Finery : Person
 5     {
 6         protected Person component;
 7 
 8         //打扮
 9         public void Decorate(Person component)
10         {
11             this.component = component;
12         }
13 
14         public override void Show()
15         {
16             if (component != null)
17             {
18                 component.Show();
19             }
20         }
21     }
22 }

Program.cs

 1 namespace DecorativePattern
 2 {
 3     class Program
 4     {
 5         static void Main(string[] args)
 6         {
 7             Person xc = new Person("小菜");
 8             //1
 9             Console.WriteLine("\n第一种装扮：");
10 
11             Sneakers sneaker = new Sneakers();
12             BigTrouser bigTrouser = new BigTrouser();
13             Tshirts tshirts = new Tshirts();
14 
15             //装饰过程
16             sneaker.Decorate(xc);
17             bigTrouser.Decorate(sneaker);
18             tshirts.Decorate(bigTrouser);
19             tshirts.Show();
20             //2
21             Console.WriteLine("\n第二种装扮：");
22 
23             LeatherShoes leatherShoes = new LeatherShoes();
24             Tie tie = new Tie();
25             Suit suit = new Suit();
26 
27             //装饰过程
28             leatherShoes.Decorate(xc);
29             tie.Decorate(leatherShoes);
30             suit.Decorate(tie);
31             suit.Show();
32 
33             Console.Read();
34         }
35     }
36 
37     class Tshirts : Finery
38     {
39         public override void Show()
40         {
41             Console.Write("大T恤");
42             base.Show();
43         }
44     }
45 
46     class BigTrouser:Finery
47     {
48         public override void Show()
49         {
50             Console.Write("垮裤");
51             base.Show();
52         }
53         
54     }
55 
56     class Sneakers : Finery
57     {
58         public override void Show()
59         {
60             Console.Write("破球鞋 ");
61             base.Show();
62         }
63     }
64 
65     class Suit : Finery
66     {
67         public override void Show()
68         {
69             Console.Write("西装 ");
70             base.Show();
71         }
72     }
73 
74     class Tie : Finery
75     {
76         public override void Show()
77         {
78             Console.Write("领带 ");
79             base.Show();
80         }
81     }
82 
83     class LeatherShoes : Finery
84     {
85         public override void Show()
86         {
87             Console.Write("皮鞋 ");
88             base.Show();
89         }
90     }
91 }