static TEventHandler MakeDeregisterCodeAndWeakEventHandler
<TEventSource, TEventListener>
(
WeakEventHandler weh,
TEventSource senderObject,
Action <TEventSource, TEventHandler> deregisterEvent,
Action <TEventListener, object, TEventArgs> forwarderAction
)
where TEventSource : class
where TEventListener : class
{
Action <object, TEventArgs> eventHandler = (sender, args) =>
{
TEventListener listeningObject = (TEventListener)weh.listeningReference.Target;
if (listeningObject != null)
{
forwarderAction(listeningObject, sender, args);
}
else
{
weh.Deregister();
}
};
weh.deregisterCode = delegate
{
deregisterEvent(senderObject, ConvertDelegate(eventHandler));
};
return(ConvertDelegate(eventHandler));
}