static void Main(string[] args)
{
//一对多的依赖关系有耦合
Cat cat = new Cat();
cat.Miao_0();
//1.使用面向抽象实现观察者模式。对观察者行为提供接口；主题对象中提供观察者行为接口的集合用来存放观察者引用（订阅）；通过遍历观察者行为接口集合触发订阅。
Console.WriteLine("*************Observer***************");
{
cat.AddObserver(new Mouse());
cat.AddObserver(new Dog());
cat.AddObserver(new Baby());
cat.MiaoObserver();
}
//2.使用Event实现观察者模式。
{
Console.WriteLine("*************Event***************");
Baby baby = new Baby();
cat.CatMiaoEvent += new Mouse().Run;
cat.CatMiaoEvent += new Dog().Wang;
cat.CatMiaoEvent += baby.Cry;
cat.MiaoEvent();
cat.CatMiaoEvent -= baby.Cry;
cat.MiaoEvent();
}
Console.ReadKey();
}
/// <summary>
/// 观察者模式例子
/// 背景：猫大叫,两只老鼠开始逃跑,主人醒来,宝宝也醒来了并且哭了起来
/// </summary>
/// <param name="args"></param>
static void Main(string[] args)
{
// 定义猫
var myCat = new Cat();
// 定义两只老鼠
var myMouse1 = new Mouse("mouse1", myCat);
var myMouse2 = new Mouse("mouse2", myCat);
// 定义主人
var myMaster = new Master(myCat);
// 定义baby
var myBaby = new Baby(myCat);
// 猫大叫
myCat.Cry();
Console.Read();
}
static void Main(string[] args)
{
Console.WriteLine("欢迎大家来到软谋教育.net高级班公开课之设计模式特训课，今天是Eleven老师为大家带来的观察者模式");
Baby bady = new Baby();
bady.Cry();
Console.WriteLine("*************new Cry******************");
bady.AddObserver(new Father());
bady.AddObserver(new Mother());
bady.AddObserver(new Dog());
bady.AddObserver(new Cat());
bady.AddObserver(new Mouse());
bady.AddObserver(new Neighbor());
bady.NewCry();
Console.WriteLine("*************Cry event******************");
bady.BabyCryHandler += new Father().Roar;
bady.BabyCryHandler += new Mother().Whisper;
bady.BabyCryHandler += new Dog().Bark;
bady.BabyCryHandler += new Cat().Run;
bady.BabyCryHandler += new Mouse().Hide;
bady.BabyCryHandler += new Neighbor().Awake;
bady.CryEvent();
Action <string, int, DateTime> action = new Action <string, int, DateTime>(Test);
action("天天", 11, DateTime.Now);
//Func
Console.ReadKey();
}