委托详解
事件
using System;
using System.Threading;namespace ConsoleAPP1
{class Program{static void Main(string[] args){Customer customer = new Customer(); //s事件拥有者Waiter waiter = new Waiter(); //事件的响应者// += 事件的订阅 customer.Order 事件 waiter.Action事件处理器customer.Order += waiter.Action;customer.Action();customer.PayTheBill();}}//当类作为委托的参数时，默认类的名字要添加EventArgs，并继承与EventArgspublic class OrderEventArgs:
