public void Run()
{
// 產生一間報社
NewspaperOffice office = new NewspaperOffice();
// Arvin 想要訂閱報紙
Customer arvin = new Customer("Arvin");
office.SubscribeNewspaper(arvin);
// Jack 想要訂閱報紙
Customer jack = new Customer("Jack");
office.SubscribeNewspaper(jack);
// 報社發送了第一則新聞
office.SendNewspaper("News One.......");
// Arvin 不想看報紙了，要退訂
office.UnsubscribeNewspaper(arvin);
// 報社發送了第二則新聞
office.SendNewspaper("News Two.......");
Console.Read();
}
static void TestObserverPattern()
{
NewspaperOffice office = new NewspaperOffice();
Subscriber observer = new Subscriber(office);
office.ValueChanges();
}