Ejemplo n.º 1
0
 public bool UnsubscribeFromPriceChangedEvent()
 {
     try
     {
         IProductsServiceCallback callback =
             OperationContext.Current.GetCallbackChannel <IProductsServiceCallback>();
         subscribers.Remove(callback);
         return(true);
     }
     catch (Exception)
     {
         return(false);
     }
 }
Ejemplo n.º 2
0
 public bool SubscribeToPriceChangedEvent()
 {
     try
     {
         IProductsServiceCallback callback =
             OperationContext.Current.GetCallbackChannel <IProductsServiceCallback>();
         if (!subscribers.Contains(callback))
         {
             subscribers.Add(callback);
         }
         return(true);
     }
     catch (Exception)
     {
         return(false);
     }
 }