In order to achieve your requirement you can slightly change the ControlTemplate of the RadSlider. Basically you can do the following
- Extract the ControlTemplate of the slider. You can see the Editing Control Templates help article to see how to do it.
- Find the RepeatButton elements with x:Names set to "LargeIncreaseButton" and "LargeDecreaseButton", and set their IsHitTestVisible properties to False. Note that those elements represents the slider's track.
- Find the Grid that holds the Thumb elements and also set its IsHitTestVisible to False.
This will ensure that the track and the buttons cannot be clicked and the Value of the slider wont be updated. Please take a look at the attached project and let me know if this approach is helpful in your scenario.
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