static void Main(string[] args)
{
StockGrabber stockGrabber = new StockGrabber();
StockObserver observer1 = new StockObserver();
stockGrabber.Register(observer1);
stockGrabber.IbmPrice = 197.00;
stockGrabber.AaplPrice = 197.00;
stockGrabber.GoogPrice = 197.00;
stockGrabber.NotifyObservers();
StockObserver observer2 = new StockObserver();
stockGrabber.Register(observer2);
stockGrabber.IbmPrice = 297.00;
stockGrabber.AaplPrice = 297.00;
stockGrabber.GoogPrice = 297.00;
stockGrabber.Unregister(observer1);
stockGrabber.NotifyObservers();
var getIBM = new GetTheStock(stockGrabber, 2, "IBM", 197.00);
var getAAPL = new GetTheStock(stockGrabber, 2, "AAPL", 677.60);
var getGOOG = new GetTheStock(stockGrabber, 2, "GOOG", 676.40);
new Thread(new ThreadStart(getIBM.Run)).Start();
new Thread(new ThreadStart(getAAPL.Run)).Start();
new Thread(new ThreadStart(getGOOG.Run)).Start();
}
/*
* Defines one-to-many dependencies between objects so that the state one changes, all dependent objects are notified.
* Contains two main actors, Subject which notifies change and Observer that receives and acts on updates
* Loose coupling is a benefit. However, Subject may send updates that don't matter to Observer.
*/
static void Main(string[] args)
{
var stockGrabber = new StockGrabber();
var observer1 = new Observer1();
var observer2 = new Observer2();
stockGrabber.Register(observer1);
stockGrabber.Register(observer2);
stockGrabber.SetPrice(100.00);
Console.ReadLine();
}