Subscribe to INotifyPropertyChanged for nested (child) objects

Question

I\'m looking for a clean and elegant solution to handle the INotifyPropertyChanged event of nested (child) objects. Example code:

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Answer 1

I have been Searching the Web for one day now and I found another nice solution from Sacha Barber:

http://www.codeproject.com/Articles/166530/A-Chained-Property-Observer

He created weak references within a Chained Property Observer. Checkout the Article if you want to see another great way to implement this feature.

And I also want to mention a nice implementation with the Reactive Extensions @ http://www.rowanbeach.com/rowan-beach-blog/a-system-reactive-property-change-observer/

This Solution work only for one Level of Observer, not a full Chain of Observers.