装饰模式的简单实现（C#）内有图一张,嘿嘿.....

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace ConsoleApplication1
{
    class Class1
    {
        public static void Main()
        {
            Person p = new Person("张三");

            Ring r = new Ring();
            EarRing er = new EarRing();
            NeckLace nl = new NeckLace();

            r.Decrate(p);
            er.Decrate(r);
            nl.Decrate(er);
            nl.Show();
            Console.Read();
        }
    }

    class Person
    {
        string name;

        public Person(string name)
        {
            this.name = name;
        }

        public Person()
        {
        } //重载一个没有参数的构造函数，给其他子类用

        public virtual void Show()
        {
            Console.WriteLine("{0}拥有以上装饰物品", name);
        }
    }

    class Decrator : Person
    {
        Person p;

        public override void Show()
        {
            p.Show();
        }

        public void Decrate(Person p)
        {
            this.p = p;
        }
    }

    class Ring : Decrator
    {
        public override void Show()
        {
            Console.WriteLine("戒指");
            base.Show();
        }
    }

    class EarRing : Decrator
    {
        public override void Show()
        {
            Console.WriteLine("耳环");
            base.Show();
        }
    }

    class NeckLace : Decrator
    {
        public override void Show()
        {
            Console.WriteLine("项链");
            base.Show();
        }
    }
}