static void Main(string[] args)
{
//GreetingPeople("Jim", EnglishGreeting);
//GreetingPeople("张", ChineseGreeting);
////Hello, Jim!
////张 你好！
//MakeGreeting makeGreeting;
//makeGreeting = ChineseGreeting;
//makeGreeting += EnglishGreeting;
////第一次加载委托必须=，第二次用+=，如果第一次用+=，必报编译错:Use of unassigned local variable 'makeGreeting'/使用了未赋值的局部变量
//makeGreeting("Jim");
//GreetingPeople("Jim", makeGreeting); //has the same result as previous code
//Jim 你好！
//Hello, Jim!
MakeGreeting delegate1 = new MakeGreeting(EnglishGreeting);
delegate1 += ChineseGreeting; // 给此委托变量再绑定一个方法
// 将先后调用 EnglishGreeting 与 ChineseGreeting 方法
GreetingPeople("Jimmy Zhang", delegate1);
delegate1 -= EnglishGreeting; // 取消对EnglishGreeting方法的绑定
// 将仅调用 ChineseGreeting
GreetingPeople("张子阳", delegate1);
Console.ReadKey();
}
public static void GreetingPeople(string name, MakeGreeting makeGreeting)
{
makeGreeting(name);
}
