As described in my previous post
, I've created a custom field editor for the RadFilter and restricted the available filter functions in the filter menu. The available functions are Contains, DoesNotContain, IsEmpty, and NotIsEmpty. When the editor is first created, however, the default filter function selected is EqualTo - even though EqualTo is not allowed in the menu. I've attached a screenshot where you can see EqualTo is selected even though it isn't in the list of available filter functions.
I'm guessing that since I'm hiding the filter menu items client-side, the RadFilter doesn't know that EqualTo is not a valid selection for a filter function when creating the new field editor server-side. How can I change the default filter function for my custom field editor to be Contains instead of EqualTo?