学步园

问题：老板吩咐小王，当小李玩游戏时候，就把小李薪水扣掉100块。
(我按自己的习惯，重写的代码，更好理解了)

using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;

namespace AspNetTest.Common
{
    /**//// <summary>
    /// Define_Delegate_Xiaowang 的摘要说明。
    /// </summary>
    public class Define_Delegate_Xiaowang : System.Web.UI.Page
    {
        private void Page_Load(object sender, System.EventArgs e)
        {
            XiaoLi xiaoli = new XiaoLi(1500);
            Response.Write("小李打游戏前的薪水是：" + xiaoli.Sacalar.ToString() + "<br>");
            
            XiaoWang xiaowang = new XiaoWang();
            xiaoli.PlayGameEvent += new PlayEventHandler(xiaowang.SubtractSalary);
            
            xiaoli.PlayGame();
            Response.Write("小李打游戏后的薪水是：" + xiaoli.Sacalar.ToString() + "<br>");
            // 在此处放置用户代码以初始化页面
        }
        
        public delegate void PlayEventHandler(Empolyee sender);
        
        public class Empolyee
        {
            public Empolyee(double sacalar)
            {
                this.sacalar = sacalar;
            }
            private double sacalar;
            public double Sacalar
            {
                get
                {
                    return sacalar;
                }
                set
                {
                    this.sacalar = value;
                }
            }            
        }
        
        public abstract class EmpolyeeWhoPlay : Empolyee
        {
            public EmpolyeeWhoPlay(double sacalar) : base(sacalar)
            {
            }
            public abstract void PlayGame();
        }
        
        public class XiaoLi : EmpolyeeWhoPlay
        {
            public XiaoLi(double sacalar) : base(sacalar)
            {
            }
            public PlayEventHandler PlayGameEvent;
            private void OnPlayGame()
            {
                if(PlayGameEvent != null)
                {
                    PlayGameEvent(this);
                }
            }
            public override void PlayGame()
            {
                HttpContext.Current.Response.Write("小李正在玩游戏！<br>");
                OnPlayGame();
            }
        }
        
        public class XiaoWang
        {
            public void SubtractSalary(Empolyee sender)
            {
                sender.Sacalar -= 100;
                HttpContext.Current.Response.Write("小王发现了小李打游戏，扣了小李薪水100块！<br>");                
            }
        }
        
        Web 窗体设计器生成的代码#region Web 窗体设计器生成的代码
        override protected void OnInit(EventArgs e)
        {
            //
            // CODEGEN: 该调用是 ASP.NET Web 窗体设计器所必需的。
            //
            InitializeComponent();
            base.OnInit(e);
        }
        
        /**//// <summary>
        /// 设计器支持所需的方法 - 不要使用代码编辑器修改
        /// 此方法的内容。
        /// </summary>
        private void InitializeComponent()
        {    
            this.Load += new System.EventHandler(this.Page_Load);
        }
        #endregion
    }
}