When the user presses the PAGE UP or PAGE DOWN key or clicks in the scroll bar track on either side of the scroll thumb, the Value property changes according to the value set in the LargeChange property.
You might consider setting the LargeChange value to a percentage of the Height (for a vertically oriented scroll bar) or Width (for a horizontally oriented scroll bar) values. This keeps the distance your scroll bar moves in proportion to its size.
Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2