I made a pull request about the compare method not being the same as one in the EditRow and made a pull request.
Now this is sadly returning an error in the latest release 
(System.NullReferenceException: 'Object reference not set to an instance of an object.')
canyou solve this ?
I do need the functionality to work like the one in EditRow if this is possible 
Looks like I've accepted your change without proper testing - I'll remove your code and will publish update.
Sadly I assumed something and didn't test it either.
Sorry !
Thank you for the update.
The error is gone but the item is not removed from the editedItems and editContexts. I think this is because it doesn't use the RadzenDataGrid KeyProperty to remove it from these collections.
It does work using normal data but I am working with dynamic data and then it doesn't work.
I should have mentioned that, sorry.
In my case it doesn't work the displaying of the data works fine but as soon as i want to edit it breaks in the EditRowInternal method.
This is my dynamic data (from a method inside my viewmodel)
Yesterday i thought i had solved it by using 
and setting the RadzenDataGrid KeyProperty to the Key property
That worked I could edit but then if I Canceled the CancelRowEdit method didn't work.
