Hi Iosu Buenetxea,
Thanks for contacting us and for your questions.
The behavior that you observe is defined in the default style of the RadDataBoundListBoxItem.
If you wish to change this behavior, you will have to define your own style with specific visual states. For your convenience, I am attaching a .ZIP file containing the default RadDataBoundListBoxItem
style which you can use as a starting point to create the behavior you desire.
I hope this helps.
All the best,
the Telerik team
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