I am trying to create my own NumericUpDown by extending the RADNumericUpDown. I am trying to set the Windows7 theme on the user control. But it doesn't work.
You have to set DefaultStyleKey in the OnInitialized method. We are using a composit key to make the control find the proper style for the currently applied theme. Check the attached solution for more information.
Kind regards,
Pana
the Telerik team
Browse the videos here>> to help you get started with RadControls for WPF