Hi Edward Pauley,
Here is what you should attach and listen to:
RadDataFilter.FilterDescriptors.CollectionChanged -> will be fired when top-level filters are being added or removed.
RadDataFilter.FilterDescriptors.ItemChanged -> will be fired each time something inside a filter (top-level or nested one) changes, i.e. the user enters a new value, changes the operator and so forth.
These two events cover all possible changes that the user can inflict on RadDataFilter. If you attach to both of them and manually call RDDS.Load() you will be in fact simulating the built-in AutoLoad behavior.
I hope this helps.
Let me know if there are problems.
the Telerik team
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