static void Main(string[] args)
{
Heater heater = new Heater();
Alarm alarm = new Alarm();
heater.Boiled += alarm.MakeAlert;
//注册方法
heater.Boiled += alarm.MakeAlert;
//为匿名对象注册方法
heater.Boiled += new Heater.BoiledEventHandler(alarm.MakeAlert);
//注册静态方法
heater.Boiled += Display.ShowMsg;
heater.BoiledWater();
Console.ReadKey();
}
