Desktop Combobox

I populate a desktop combo box with the top 50 similar records from a database, a list of venues in this case. Auto complete is on and this displays the items in the list, narrowed as each character is entered as expected.

The records populate the row items on the text changed event.

Is there a way to ‘cursor’ down the list to the preferred entry without the cursor down key always selecting the first item. I would only like to select the chosen record, which may for example be 5 entries down by pressing the [Enter] or [Return] only and not having to type the whole entry.

Nothing should be added to the list either, if the entry is not there it can’t be selected or added.

Am I missing something ovbious?