Finding the items changed in Observable Collection
<p>I have a class from a EF db context which I have displayed in a datagrid based on an ObservableCollection. The user can edit the the grid and this all displays fine.</p>

<p>However I now need to send the data back to the database. I do not want to send all the items in the collection to my save method, so can I find only the items that have been have change in the collection? </p>