Slider.OnPreviewMouseLeftButtonDown Method (MouseButtonEventArgs)
Provides class handling for the PreviewMouseLeftButtonDown routed event.
Assembly: PresentationFramework (in PresentationFramework.dll)
This implementation marks the PreviewMouseLeftButtonDown event as handled by setting the Handled property of the event data to true. The event is handled by this method so that the RepeatButton controls of the Slider do not handle the event.
Notes to Inheritors:
If you override, always call the base implementation in your implementation. Failure to call the base implementation prevents base classes from handling the event with a class handler, which might change the run-time behavior of the final class. You can call the base implementation either before or after your special handling, depending on your requirements.
Available since 3.0