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

namespace ConsoleApplication3
{
public delegate void GreetingDelegate(string name);
class Program
    {
static void Main(string[] args)
        {
            myGreet greet = new myGreet();
            greet.GreetPeople("Treey",greet.EnglishGreet);
            greet.GreetPeople("小明",greet.ChineseGreet);    

        }
    }
class myGreet
    {
public void ChineseGreet(string name)
        {
            Console.WriteLine("早上好 {0}",name);
        }
public void EnglishGreet(string name)
        {
            Console.WriteLine("Good Morning {0}",name);
        }
public void GreetPeople(string name,GreetingDelegate myDelegate)
        {
            myDelegate(name);//在这里这样就实现对相应的方法的封装.调用相应传进来的方法。
        }
    }
}

static void Main(string[] args)
        {
            Heater myHeater = new Heater();
            myHeater.BoilEvent += (new Alarm()).MakeAlarm;
            myHeater.BoilEvent += (new Display()).ShowMsg;
            myHeater.BoilWater();
         }

    /// <summary>
/// 热水器类，也就是监视对象，用来对水进行加热
/// </summary>
    public class Heater
    {
public delegate void BoilHandler(int para);//声明委托
        public event BoilHandler BoilEvent;
private int temperature;

/// <summary>
/// 对水进行加热的函数,BoilEvent(temperature)就是当水加热到一定程度时触发事件调用相应的方法;
/// </summary>
        public void BoilWater()
        {
for (int i = 0; i < 100; i++)
            {
                temperature = i;
if (i >= 95)
                {
if (null != BoilEvent)
                    {
                        BoilEvent(temperature);
                    }
break;
                }
            }
        }
    }

public class Alarm
    {
public void MakeAlarm(int param)
        {
            Console.WriteLine("Alarm：嘀嘀嘀，水已经 {0} 度了：", param);
        }
    }

public class Display
    {
public void ShowMsg(int param)
        {
            Console.WriteLine("Display：水快烧开了，当前温度：{0}度。", param);
        }

    }

 public class Heater
    {
private int temperature;//类的私有字段
        public string type;
public string area;
public delegate void BoiledEventHandler(object sender,BoiledEventArgs e);//声明委托
        public event BoiledEventHandler Boiled;
//定义BoiledEventArge类，携带好信息以传递给Observer
        public class BoiledEventArgs : EventArgs
        {
public readonly int temperature;
public BoiledEventArgs(int temperature)
            {
this.temperature = temperature;
            }

        }

protected virtual void OnBoiled(BoiledEventArgs e)
        {
if (null!=Boiled)
            {
                Boiled(this,e);
            }
        }

/// <summary>
/// 烧水
/// </summary>
        public void BoilWater()
        {
for (int i = 0; i < 100; i++)
            {
this.temperature = i;
if (95==i)
                {
                    BoiledEventArgs e =new BoiledEventArgs(temperature);//声明事件的参数
                    OnBoiled(e);//调用OnBoiled方法触发事件 
                }
            }
        }
   }

public class Alarm
    {
public void MakeAlarm(object sender,Heater.BoiledEventArgs e)
        {
            Heater myHeater = new Heater();
            Console.WriteLine("Display：{0} - {1}: ", myHeater.area,myHeater.type);
            Console.WriteLine("Display：水快烧开了，当前温度：{0}度。", e.temperature);
            Console.WriteLine();

        }
    }