The RadSlider has been re-factored during Q2 2011. Many of old existing databinding issues are resolved and its performance is improved as demonstrated in this blog post. The SelectionRangeChanged is not fired anymore and you are can now use the SelectionChanged event like so:
private void slider_SelectionChanged(object sender, Telerik.Windows.RadRoutedEventArgs e)
double start =
double end =
Feel free to ask if you need more info on this.Best wishes,
the Telerik team
Register for the Q2 2011 What's New Webinar Week. Mark your calendar for the week starting July 18th and book your seat for a walk through of all the exciting stuff we will ship with the new release!