Related Radcombobox in EditItemTemplate

[Michael]

Hi,

I have a RadGrid with about 5-6 columns.  Two of the columns will be related comboboxes like the following demo.

http://demos.telerik.com/aspnet-ajax/combobox/examples/functionality/multiplecomboboxes/defaultcs.aspx

 

While I have the Related Radcombobox function working fine on multiple pages, I'm having absolutely no luck making this work when Editing or Adding a new item.  Any help would be highly appreciated.

Basically, when the user clicks the image to edit in line, the first dropdown selected will provide the items in the second dropdown.  So, it's kind of a combination of the first link provided and the following grid.

http://demos.telerik.com/aspnet-ajax/combobox/examples/functionality/comboingrid/defaultcs.aspx?product=grid

Think a selection of supplier populating a list of categories.

Thank you!

Michael