ZoomAndPanControl.MouseWheelUp - метод

Don't handle mouse wheel input from the ScrollViewer, the mouse wheel is used for zooming in and out, not for manipulating the scrollbars.

public void MouseWheelUp()

Public Sub MouseWheelUp

public:
virtual void MouseWheelUp() sealed

abstract MouseWheelUp : unit -> unit 
override MouseWheelUp : unit -> unit