title: WPF - databinding ObservableCollection CollectionChanged event?
body: <p>I have an observable collection implemented in my user control which indicates states of a device.  Based on the collection change, the user control is to trigger animations(subscribe to collectionchanged event).  The observable collection is implemented as a dependency property.  In the application, I data bind the device states to the user control observableCollection using one-way databinding.  When a new state is added in the application, I can see the ObservableCollection in the user control is updated.  However, the CollectionChanged event never got fired, so no animations.  Does anyone has an idea why this is so? </p>
  
  <p>Thank you in advance.  </p>