public static void ShowDemo()
{
Console.WriteLine("春游活动的 观察者模式 演示 (使用 C# 的 delegate 机制) ");
HappyBar hb = new HappyBar();
QQMember member1 = new QQMember() { Name = "张三", happyBar = hb };
QQMember member2 = new QQMember() { Name = "李四", happyBar = hb };
hb.PublishInfo = " 怀柔水长城 时间：2012年4月XX日";
hb.GoUpdate += new HappyBar.EventHandler(member1.GoToUpdate);
hb.GoUpdate += new HappyBar.EventHandler(member2.GoToUpdate);
hb.Notify();
}
public static void ShowDemo()
{
Console.WriteLine("春游活动的 观察者模式 演示 (使用 C# 的 delegate 机制) ");
HappyBar hb = new HappyBar();
QQMember member1 = new QQMember()
{
Name = "张三", happyBar = hb
};
QQMember member2 = new QQMember()
{
Name = "李四", happyBar = hb
};
hb.PublishInfo = " 怀柔水长城 时间：2012年4月XX日";
hb.GoUpdate += new HappyBar.EventHandler(member1.GoToUpdate);
hb.GoUpdate += new HappyBar.EventHandler(member2.GoToUpdate);
hb.Notify();
}