private static void PublishUpdateStocks(StockSubject stockSubject)
{
stockSubject.UpdateStockValue(new Stock {
Name = "AAPL", Value = 3
});
stockSubject.UpdateStockValue(new Stock {
Name = "AAPL", Value = 4
});
stockSubject.UpdateStockValue(new Stock {
Name = "AAPL", Value = 5
});
stockSubject.UpdateStockValue(new Stock {
Name = "AAPL", Value = 6
});
stockSubject.UpdateStockValue(new Stock {
Name = "FTSE", Value = 6
});
stockSubject.UpdateStockValue(new Stock {
Name = "FTSE", Value = 12
});
stockSubject.UpdateStockValue(new Stock {
Name = "FTSE", Value = 2
});
stockSubject.UpdateStockValue(new Stock {
Name = "FTSE", Value = 3
});
}
public void RunSimple()
{
StockSubject stockSubject = new StockSubject();
LondonStockObserver londonObserver = new LondonStockObserver(stockSubject);
AaplObserver aaplObserver = new AaplObserver(stockSubject);
PublishUpdateStocks(stockSubject);
}
public void RunReactiveWithEvents()
{
StockSubject stockSubject = new StockSubject();
IObservable <EventPattern <StockUpdateEventArgs> > londonObservable = Observable.FromEventPattern <StockUpdateEventArgs>(
ev => stockSubject.StockUpdated += ev,
ev => stockSubject.StockUpdated -= ev).Where(s => s.EventArgs.Stock.Name == "FTSE");
IObservable <EventPattern <StockUpdateEventArgs> > aaplObservable = Observable.FromEventPattern <StockUpdateEventArgs>(
ev => stockSubject.StockUpdated += ev,
ev => stockSubject.StockUpdated -= ev).Where(s => s.EventArgs.Stock.Name == "AAPL");
using (londonObservable.Subscribe(PrintLondonStockPriceUpdate))
using (aaplObservable.Subscribe(PrintAaplStockPriceUpdate))
{
PublishUpdateStocks(stockSubject);
}
}
public AaplObserver(StockSubject stockObservable)
{
stockObservable.StockUpdated += (obj, e) => PrintNewValue(e.Stock);
}
public LondonStockObserver(StockSubject stockObservable)
{
stockObservable.StockUpdated += (obj, e) => PrintStockValue(e.Stock);
}
