Currently, the RadComboBox control does not allow for the filtering and autocomplete features to work simultaneously out of the box. I have, however, logged a new feature request
in our feedback portal regarding such functionality. If the demand for such an item is high, we will consider implementing it in future releases.
I have, however, come with a workaround that you can use for the time being. It involves handling the TextInput
event of the control to modify the source collection - as if filtering was applied. In addition, I've bound the Text
property of the control so that the collection is returned to its initial value when no text is present. I've attached a small sample project with the implementation for your reference.
Please have a look and let me know if such an approach would work for you.
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