I want to build a custom ScrollViewer control, based on the original ScrollViewer of WPF actually, and I wanted to add an elastic effect to it! I tried methods like ScrollToVerticalOffset() but they won't go beyond the scrollable content of the ScrollViewer! I don't know how to exactly emulate the elastic effect (which is when you reach the end of the ScrollViewer's content you get a more tougher panning experience throughout the list and the ScrollViewer's content move beyond their bottom (or top) place)? It would be great if any of you guys could help me with this!