RadComboBox for .NET MAUI has search feature, however it does not filters the items matching the text, instead it only scrolls to the matching item. We can manually filter the items in the item source but it would be nice to have such filtering built in.

Also we need to highlight the first item that matches the search string. Currently it doesn't seem to be possible. One way could be to select the first item manually which may change the background of the item and give a feel of highlight but that causes problem with selected item because we also need to subscribe to selected item change and do some other processing based on that. If we select item as filter happens then it would trigger selection change multiple times needlessly.

Also it seems that currently RadComboBox dropdown does not have support for keyboard navigation. We need to be able to navigate between items with keyboard up/down arrows so that user can navigate to different items and then press enter to select the highlighted item. This feature might not make sense on mobile but it is needed for desktop platforms.

Let me know if there is already a way to achieve the above behavior.