static void Main(string[] args)
{
Publishser pub = new Publishser();
Subscriber sub = new Subscriber();
pub.NumberChanged += new NumberChangedEventHandler(sub.OnNumberChanged);
pub.DoSomething(); // 应该通过DoSomething()来触发事件
pub.NumberChanged(100); // 但可以被这样直接调用，对委托变量的不恰当使用
}
/// <summary>
/// 发布-订阅
/// </summary>
void publishser()
{
var kettle = new Kettle();
kettle.TurnOn();
return;
var publishser = new Publishser();
var subscriber = new Subscriber();
publishser.NumberChanged += subscriber.OnNumberChanged;
publishser.DoSomething();
}
