描述情景:利用代理委托和事件我们处理 老板 员工 包含的动作 买烟 涨工资
实现：老板要抽烟需要买烟会让员工去买烟，然后就给员工涨工资.

Boss

 class Boss
    {
        public delegate void BuySmokeHandle(Boss boss, Employee em);
        //定义老板抽烟的事件
        public event BuySmokeHandle smokehandler;
        public string name;
        
        public  Boss()
        {
            name = "老板";
            //注册抽烟事件  交由哪个函数来处理

            //调用方式1： 可以注释行 97
       //     smokehandler += new BuySmokeHandle(smokeevent);  
        }
        public  void  asksmoke(Employee   em)
        {
            if (this.smokehandler != null)
            {
                BuySmokeHandle hander = new BuySmokeHandle(em.buysomke);
                hander(this, em);
            }
        }
        public  virtual  void smokeevent(Boss  boss,Employee emname)
        {
            Console.WriteLine("e:{0}给b:{1}买的烟抽完了,{2}你很不错  //事件的使用", emname.name, boss.name,emname.name);
            //因此我决定还可以多做一些事情，在抽到烟过后 ,小王 你的工资张拉
            emname.slary = 8000;
        }



    }

Empoyee

  class Employee
    {
        public double slary
        {
            get; set;
        }
        public string name
        {
            get; set;
        }
        public Employee()
        {
            name = "员工";
        }
        public   void   buysomke(Boss boss,Employee  emnamme)
        {
            Console.WriteLine("e:{0}给b:{1}买了烟 //代理方式让下属买烟",emnamme.name,boss.name);
            //让买到烟  老板 就要去抽烟
            boss.smokeevent(boss, emnamme);
        }
    }

调用

      Boss boss = new Boss();
        boss.name = "张与";
        Employee em = new Employee();
        em.name = "小王";
        //方式2： 可以注释35
        boss.smokehandler += new Boss.BuySmokeHandle(boss.smokeevent);
        boss.asksmoke(em);
        Console.WriteLine("{0}的工资涨到了{1}",em.name, em.slary);
        Console.ReadLine();