装饰：修饰
Class Person // 人有名字和形象。一个人逐渐发展，形象不断完善，如何避免多重继承？
Class PersonWrapper :Person //包装类，对人进行修饰，专门用于扩展包装
//他可能硬汉，可能柔情，可能博学，可能多金...也可能既硬汉柔情，又博学多金...（完美的化身）
class PersonYingHan:PersonWrapper //硬汉包装类
class PersonRouQing:PersonWrapper //柔情包装类
class PersonLearned:PersonWrapper //博学包装类
class PersonRich:PersonWrapper //多金包装类
//实现源码
namespace DecorateMethod
{
class Program
{
static void Main(string[] args)
{
Person p = new Person("小马");
PersonYingHan yh = new PersonYingHan(p);
yh.Show();
PersonLearned bx = new PersonLearned(p);
bx.Show();
PersonRouQing rq = new PersonRouQing(p);
rq.Show();
PersonRich wlw = new PersonRich(p);
wlw.Show();
Console.WriteLine("*****牛比、不断升级的小马*****");
Person p2 = new Person("小马"); //以下体现Decorate模式精华！ 扩展如此easy！
PersonYingHan PersonLevel1 = new PersonYingHan(p2);
PersonRouQing PersonLevel2 = new PersonRouQing(PersonLevel1);
PersonLearned PersonLevel3 = new PersonLearned(PersonLevel2);
PersonRich PersonLevel4 = new PersonRich(PersonLevel3);
PersonLevel4.Show();
Console.ReadLine();
}
}
class Person
{
public Person()
{ }
private string name;
public Person(string name)
{
this.name = name;
}
public virtual void Show()
{
Console.WriteLine("装扮的{0}:", name);
}
}
class PersonWrapper:Person
{
protected Person component;
public PersonWrapper(Person component)
{
this.component = component;
}
public override void Show()
{
if (component != null)
{
component.Show();
}
}
}
class PersonYingHan:PersonWrapper
{
public PersonYingHan(Person p)
:base(p)
{
}
public override void Show()
{
Console.WriteLine("硬汉形象！");
base.Show();
}
}
class PersonRouQing:PersonWrapper
{
public PersonRouQing(Person p)
:base(p)
{
}
public override void Show()
{
Console.WriteLine("温柔形象！");
base.Show();
}
}
class PersonLearned:PersonWrapper
{
public PersonLearned(Person p)
:base(p)
{
}
public override void Show()
{
Console.WriteLine("博学多才形象！");
base.Show();
}
}
class PersonRich:PersonWrapper
{
public PersonRich(Person p)
:base(p)
{
}
public override void Show()
{
Console.WriteLine("钻石王老五形象！");
base.Show();
}
}
}