static void Main() { // First example 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(); IBM ibm = new IBM("IBM", 120.00); ibm.Attach(new Investor("Sorros")); ibm.Attach(new Investor("Berkshire")); ibm.Price = 120.10; ibm.Price = 121.00; ibm.Price = 120.50; ibm.Price = 120.75; ibm.Notify(); // Second example BaggageHandler provider = new BaggageHandler(); ArrivalsMonitor observer1 = new ArrivalsMonitor("BaggageClaimMonitor1"); ArrivalsMonitor observer2 = new ArrivalsMonitor("SecurityExit"); provider.BaggageStatus(712, "Detroit", 3); observer1.Subscribe(provider); provider.BaggageStatus(712, "Kalamazoo", 3); provider.BaggageStatus(400, "New York-Kennedy", 1); provider.BaggageStatus(712, "Detroit", 3); observer2.Subscribe(provider); provider.BaggageStatus(511, "San Francisco", 2); provider.BaggageStatus(712); observer2.Unsubscribe(); provider.BaggageStatus(400); provider.LastBaggageClaimed(); // Third example var weatherData = new WeatherData(); var forecastDisplay = new ForecastDisplay(weatherData); var heatIndexDisplay = new HeatIndexDisplay(weatherData); weatherData.setMeasurements(80, 65, 30.4f); }
public static void Main() { BaggageHandler provider = new BaggageHandler(); ArrivalsMonitor observer1 = new ArrivalsMonitor("BaggageClaimMonitor1"); ArrivalsMonitor observer2 = new ArrivalsMonitor("SecurityExit"); provider.BaggageStatus(712, "Detroit", 3); observer1.Subscribe(provider); provider.BaggageStatus(712, "Kalamazoo", 3); provider.BaggageStatus(400, "New York-Kennedy", 1); provider.BaggageStatus(712, "Detroit", 3); observer2.Subscribe(provider); provider.BaggageStatus(511, "San Francisco", 2); provider.BaggageStatus(712); observer2.Unsubscribe(); provider.BaggageStatus(400); provider.LastBaggageClaimed(); Console.ReadLine(); }
public virtual void Subscribe(BaggageHandler provider) { cancellation = provider.Subscribe(this); }