C#委托和事件

贴一个博客地址：张子阳
http://www.tracefact.net/CSharp-Programming/Delegates-and-Events-in-CSharp.aspx
结论：

委托是函数指针。能调用和委托函数签名相同函数。

事件是它封装了委托类型的变量，在类的外部是private的。

程序：CCboy养成

CCboy->toSuperStar->membersDo

program类

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

namespace 事件
{
class Program
{
static void Main(string[] args)
{
CCboy exo = new CCboy();
Console.WriteLine("老总，您好。您已经创造了偶像组合CCboy。");
Console.WriteLine("让我们干点事吧");
//exo.rankUpdate = delegate() { DoseList.PubllisTheSecondAlbum(10); };//=是报错，只能+=或-=
exo.fate();
Console.ReadKey();
}
}
}


各种功能类
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace 事件
{
static class DoseList
{
public static void GetWards()
{
Console.WriteLine("获得各种奖项");
}

public static void SellMuch()
{
Console.WriteLine("CCBoys连2张专辑卖破百万张，创X国新历史！");
}

public static void New10(int year)
{
Console.WriteLine("{0}年，成为大势新人", year);
}

public static void PubllisTheFirstAlbum(int year)
{
Console.WriteLine("{0}年，出版第一张专辑<BOYs GO>",year);
}

public static void PubllisTheSecondAlbum(int year)
{
Console.WriteLine("{0}年，出版第一张专辑<go BOYS fight>", year);
}

public static void SubscribAdd()
{
Console.WriteLine("签下很多广告");
}
}
}

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

namespace 事件
{
class membersDo
{
public delegate void selectWay();
public selectWay byPeople;
Talyer t = new Talyer();
Keven k = new Keven();
Lucas l = new Lucas();

public void doseWhat()
{

byPeople += k.KevenDo;
byPeople += l.lucasDo;
byPeople += t.TaylerDo;

if (byPeople!=null)
{
byPeople();
}
}

}
}

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

namespace 事件
{
class ToSuperStar
{
public delegate void reaction();
public event reaction GetMuch;

public void boomResult()
{
GetMuch += DoseList.SellMuch;
GetMuch += DoseList.GetWards;
GetMuch += DoseList.SubscribAdd;

if (GetMuch!=null)
{
GetMuch();
}

Console.WriteLine("作为当红组合的成员该做什么呢？");
membersDo member = new membersDo();
member.doseWhat();
}

}
}

using Sy
4000
stem;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace 事件
{
class CCboy
{

private int age1 = 2012, age2 = 2016;
// private int[] history = { 2012, 2012, 2015 };
public delegate void Recod();
public event Recod rankUpdate;

public void fate()
{

rankUpdate +=delegate() {DoseList.New10(age1);};
rankUpdate +=delegate() {DoseList.PubllisTheFirstAlbum(age1); };
rankUpdate +=delegate() {DoseList.PubllisTheSecondAlbum(age2);};

if (rankUpdate!=null)
{
//for (int i = 0; i < history.Length; i++)
//{
//    rankUpdate(history[i]);
//}

rankUpdate();

Console.WriteLine("已经红了，做点别的吧");

ToSuperStar ts = new ToSuperStar();
ts.boomResult();

}
}
}
}

组合成员类

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

namespace 事件
{
class Keven
{
public void KevenDo()
{
Console.WriteLine("我是Kenven，我要解约");
}
}
}

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

namespace 事件
{
class Lucas
{
public void lucasDo()
{
Console.WriteLine("我是lucas，我要解约");
}
}
}

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

namespace 事件
{
class Talyer
{
public void TaylerDo()
{
Console.WriteLine("我是Tayler，我要解约");
}
}
}