static void Main()
{
GreetingHandler firstDel, secondDel;
firstDel = new GreetingHandler(Hello);
secondDel = new GreetingHandler(Goodbye);
GreetMethod(firstDel, "Cathy");
GreetMethod(secondDel, "Bob");
}
// GET: Deletegate
public ActionResult Index()
{
DeletegateClass.Show();
GreetingClass.Greeting("波波", PeopleType.chinese); //普通调用
GreetingHandler handel = new GreetingHandler(GreetingClass.GreetingChinese); //委托实列化 方法作为参数传入
// GreetingHandler h = GreetingClass.GreetingChinese;
GreetingClass.Greeting("波波", handel);
//用action 代替委托方法 可省去声明委托一步（没有返回参数）
//Action<string> action = GreetingClass.GreetingChinese;
//GreetingClass.Greeting("波波",action);//委托调用
Action act1 = () => { }; //没有参数，就是一个小括号，没有方法体 就是一个大括号(可以有16个参数)
Action <string> act2 = a => Console.WriteLine(a); //只有一个参数 可以去掉小括号
Func <int> func1 = () => DateTime.Now.Day; //如果方法体只有一行 ，可以去掉大括号、分号、return
Func <int, string> func2 = i => i.ToString(); //可以有16个参数
Type type = typeof(Cat); //找到类型
var obj = Activator.CreateInstance(type);
Cat cat = (Cat)obj;
cat.Miao();
cat.CatMiaoHandlerMethod = Dog.Wang;
cat.CatMiaoHandlerMethod += Mouse.Run;
cat.CatMiaoHandlerMethod += Baby.Kry;
//cat.CatMiaoHandlerMethod();
cat.Miao();
// cat.CatMiaoHandlerMethodEvent = new CatMiaoHandler(Dog.Wang);//事件不能被初始化
cat.CatMiaoHandlerMethodEvent += Dog.Wang;
cat.CatMiaoHandlerMethodEvent += Mouse.Run;
cat.CatMiaoHandlerMethodEvent += Baby.Kry;
cat.Miao();
//cat.CatMiaoHandlerMethodEvent();//不能被外部调用
//linq 调用
LinqTest liqntest = new LinqTest();
liqntest.Methods();
liqntest.Sort();
DelegateExtend extend = new DelegateExtend();
extend.Test();
DBHelperSQL sqlhelper = new DBHelperSQL();
sqlhelper.insert("Insert into jmp_app (a_user_id,a_name,a_platform_id,a_paymode_id,a_apptype_id,a_key,a_notifyurl)values (1,'1222222',1,1,1,23,11111)");
return(View());
}
static void Main(string[] args)
{
Console.WriteLine("我的第一个委托测试项目！");
DelegateClass.Show();
Console.WriteLine("**********Delegate************");
GreetingHandler handlerChinese = new GreetingHandler(GreetingClass.GreetingChinese);
GreetingClass.Greeting("Mike", handlerChinese);
Console.WriteLine("**********事件测试开始*********");
Cat cat = new Cat();
//cat.Miao();
cat.CatMiaoHandlerMethod = new Cat.CatMiaoHandle(Dog.wang);
cat.CatMiaoHandlerMethod += Mouse.run;
cat.CatMiaoHandlerMethod += People.Awake;
cat.CatMiaoHandlerMethod += Stealer.Hide;
// cat.CatMiaoHandlerMethod();
//cat.CatMiaoHandlerMethodEvent = new Cat.CatMiaoHandle(Dog.wang); // 事件不能外面在类外面初始化。
cat.CatMiaoHandlerMethodEvent += Dog.wang;
cat.CatMiaoHandlerMethodEvent += Mouse.run;
cat.CatMiaoHandlerMethodEvent += People.Awake;
cat.CatMiaoHandlerMethodEvent += Stealer.Hide;
//cat.CatMiaoHandlerMethodEvent(); //事件不能在类外面启用
cat.Miao();
Console.Read();
}
/// <summary>
/// 委托对扩展开放 对修改关闭
/// 声明委托调用
/// </summary>
/// <param name="name"></param>
/// <param name="handler"></param>
public static void Greeting(string name, GreetingHandler handler)//传入一个方法进去
{
handler.Invoke(name);
}
public static void GreetMethod(GreetingHandler gd, string name)
{
WriteLine("The greeting is:");
gd(name);
}
