I've got RadGridView with couple of columns. Most of them are standard GridViewDataColumn (or combobox). Some of them uses CellEditTemplate to do some custom editing.
When I edit standard ones, validation errors are shown from edit control - as in attachment1.
When I edit custom ones, validation errors are shown normal at first, but when I try to leave control I get validation error from edit control and cel level - as in attachment2.
How can I make this custom columns behave like standard ones?