I have a GridViewComboBoxColumn in a RadGridView with IsComboBoxEditable = "True" and EditTriggers="CellClick,TextInput". When I start typing on a cell in this column, the cell enters edit mode as expected. The first character entered causes autocomplete to select the first matching item in the dropdown, but then the next character entered overwrites the first character and autocompletes starting with that character instead. For example, given the following items:
If I type a "B" into the cell when it's not in edit mode, it enters edit mode, opens the dropdown, and autocompletes to Banana. If I then type "A", it clears out Banana and autocompletes to Apple, even though the "A" is the second letter of Banana.
From a cell that's not in edit mode, I'd like to be able to start typing and have the ComboBox behave as if it was already in edit mode, so that autocomplete works immediately. Is that possible?