代理模式（Proxy）

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

namespace ds_proxy
{
    class Program
    {
        static void Main(string[] args)
        {
            try
            {
                GiveGift daili = new Proxy();
                daili.GiveDolls();
                daili.GiveFollow();
                daili.GiveChocolate();
            }
            catch (Exception e)
            {
                Console.WriteLine(e.Message);
            }
        }
    }

    interface GiveGift
    {
        void GiveDolls();
        void GiveFollow();
        void GiveChocolate();
    }
    /// <summary>
    /// 代理可以控制客户对实体类的访问
    /// </summary>
    class Proxy : GiveGift
    {    
        Pursuit gg=new Pursuit();
        public void GiveDolls()
        {
            gg.GiveDolls();
        }
        public void GiveFollow()
        {
            gg.GiveFollow();
        }
        public void GiveChocolate()
        {
            Console.WriteLine("代理：不能访问实体类的GiveChocolate()");
            //gg.GiveChocolate();
        }
    }

    /// <summary>
    /// 实体类
    /// </summary>
    class Pursuit : GiveGift
    {
        public void GiveDolls()
        {
            Console.WriteLine("mm.Name + :送你洋娃娃！");
        }
        public void GiveFollow()
        {
            Console.WriteLine("mm.Name + :送你鲜花！");
        }
        public void GiveChocolate()
        {
            Console.WriteLine("mm.Name + :送你巧克力！");
        }
    }

}