private class ZoomWithCursor : ChartZoom
        {

            public ZoomWithCursor(ChartView component, CartesianCoordinates transform, double zpos, bool brescale):
                base(component, transform, zpos, brescale)
            {
            }
            public override void OnMouseDown(MouseEventArgs mouseevent)
            {
                // Your routine
                SetCursor();

                // if right mouse button, pop zoom stack one level
                if ((mouseevent.Button & MouseButtons.Right) != 0)
                    this.PopZoomStack();
                else
                    base.OnMouseDown(mouseevent);
            }

            public override void OnMouseUp(MouseEventArgs mouseevent)
            {
                base.OnMouseUp(mouseevent);

                // Your routine
                 RestoreCursor();
            }

        }