INotifyCollectionChanged: Added item does not appear at given index '0'

Question

I\'m making a observable class. The Add methods works fine. But then I\'m trying to call the Remove() method I get this error:

\"Added item does not a

Answer 1

I tracked down the issue with Reflector and figured out the cause of this exception might refer to Equals not returning true for actually equal objects in your list; or maybe operator ==.