Currently filtering with virtualized RadComboBox is not supported as the filtering feature works with the containers (changes their Visibility).
Hello Martin,
This isn't fixed yet because in order to enter the planning phase multiple aspects should be taken into account. At this moment, this feature is not included in the immediate planning, but I've forwarded the feedback to the corresponding persons.
Regards,
Martin Ivanov
Progress Telerik
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Why isnt this fixed yet ?
You absolutely need virtualization and a radcombobox when you have eg 1000 elements, thats the reason why you use the RadComboBox in the first place instead of a standard combobox.
Hello,
Indeed, this feature would be a good addition to the RadComboBox control. In the meantime, you can use RadAutoCompleteBox to get filtering, a similar visualization and built-in virtualization.
Regards,
Martin Ivanov
Progress Telerik