static void Main(string[] args)
{
PublisherIncrementer incrementer = new PublisherIncrementer();
var dozen = new SubscriberDozens(incrementer);
incrementer.DoCount();
Console.WriteLine("计数：{0}", dozen.DozensCount);
}
public SubscriberDozens(PublisherIncrementer incrementer)
{
DozensCount = 0;
//incrementer.CountedADozen +=new Handler(IncrementDozensCount); //订阅事件
incrementer.CountedADozen += IncrementDozensCount;
}