The ComboBox control doesn't show results from lists that are small, it shows "Search by name" when you click on the down arrow. Whilst it is accepted that for large lists, you wouldn't want it attempting to populate every option, it still relies on the user having some information about what is available; which doesn't always seem appropriate (see the screenshot showing the 'Select a watermark' dialog - would a user already know the name of watermarks that are available?).
Would it be possible to extend this control so that
*) if the underlying list is small - prepopulate with all options
*) if the underlying list is large - prepopulate with the first X options and provide pagination to see more items.
Customer support service by UserEcho