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Open the DropDown When the Control Gets Focus
Updated on Sep 24, 2025
RadComboBox's API gives you the ability to open the DropDown when the control gets focus. In order to enable this behavior you should set the RadComboBox's OpenDropDownOnFocus property to True.
XAML
<telerik:RadComboBox x:Name="radComboBox" OpenDropDownOnFocus="True"/>he default value of the RadComboBox's OpenDropDownOnFocus property is False.