public void UsageMethod() { ConcreteSubject s = new ConcreteSubject(); s.Attach(new ConcreteObserver(s, "X")); s.Attach(new ConcreteObserver(s, "Y")); s.Attach(new ConcreteObserver(s, "Z")); s.SubjectState = "ABC"; s.Notify(); }
//--- C'tor public ConcreteObserver(ConcreteSubject subject, string name) { this.subject = subject; this.name = name; }