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c#weak-events

WeakEvent garbage collection in C#


I'm thinking today at the following scenario:

I have two classes A and B.

A exposes an event E.

B subscribes to this event "E", using a weak event handler "W".

After a while nobody holds any reference to B, but the GC has not yet kicked in.

While B is not yet collected by the GC and A raises "E", will the weak event handler be called?

I'm thinking yes, but I'm curios if I'm not missing something.


Solution

  • Yes it will. The WeakEventManager will see that the object B references is 'alive' (not yet collected) and will raise the event there.