protected virtual void OnNewBikeArrivedEvent(NewBikeEventArgs args)
{
/**
* There is a race condition we could encounter here where
* after we've done the null check (because event programing is multithreaded)
* the last subscriber unsubscribes. So we make a copy of the event to avoid that
*/
EventHandler <NewBikeEventArgs> handler = NewBikeArrivedEvent;
// If there are no subscribers this will be null
// so there's no point in publishing it.
if (handler != null)
{
handler(this, args);
}
}
private void HandleNewBikeEvents(object sender, NewBikeEventArgs args)
{
Console.WriteLine($" - {_name} just found out that {_shop.Name} now sells the {args.NameOfBike} bike");
}