You are right as long as you don't use Ticks. Consider the following scenario:
This way clicking somewhere in the slider won't always move the Thumb under your Mouse pointer.
As for your actual question, I suggest you to use IsMoveToPointEnabled
to true and the ValueChanged
Furthermore, you can drag the Thumb and slide it and you can get the ValueChanged
event fire only once , at the end of the drag process. This can be accomplished by setting IsDeferredDraggingEnabled
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