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

namespace DecorativePattern
{
    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);
        }
    }
}

Finery.cs

namespace DecorativePattern
{
    //服饰类
    class Finery : Person
    {
        protected Person component;

        //打扮
        public void Decorate(Person component)
        {
            this.component = component;
        }

        public override void Show()
        {
            if (component != null)
            {
                component.Show();
            }
        }
    }
}

Program.cs

namespace DecorativePattern
{
    class Program
    {
        static void Main(string[] args)
        {
            Person xc = new Person("小菜");
            //1
            Console.WriteLine("
第一种装扮：");

            Sneakers sneaker = new Sneakers();
            BigTrouser bigTrouser = new BigTrouser();
            Tshirts tshirts = new Tshirts();

            //装饰过程
            sneaker.Decorate(xc);
            bigTrouser.Decorate(sneaker);
            tshirts.Decorate(bigTrouser);
            tshirts.Show();
            //2
            Console.WriteLine("
第二种装扮：");

            LeatherShoes leatherShoes = new LeatherShoes();
            Tie tie = new Tie();
            Suit suit = new Suit();

            //装饰过程
            leatherShoes.Decorate(xc);
            tie.Decorate(leatherShoes);
            suit.Decorate(tie);
            suit.Show();

            Console.Read();
        }
    }

    class Tshirts : Finery
    {
        public override void Show()
        {
            Console.Write("大T恤");
            base.Show();
        }
    }

    class BigTrouser:Finery
    {
        public override void Show()
        {
            Console.Write("垮裤");
            base.Show();
        }
        
    }

    class Sneakers : Finery
    {
        public override void Show()
        {
            Console.Write("破球鞋 ");
            base.Show();
        }
    }

    class Suit : Finery
    {
        public override void Show()
        {
            Console.Write("西装 ");
            base.Show();
        }
    }

    class Tie : Finery
    {
        public override void Show()
        {
            Console.Write("领带 ");
            base.Show();
        }
    }

    class LeatherShoes : Finery
    {
        public override void Show()
        {
            Console.Write("皮鞋 ");
            base.Show();
        }
    }
}