VerticalScrollWidth Property

public virtual double VerticalScrollWidth {get;}

 get_VerticalScrollWidth(); 

Property Value

Only available if ScrollMode is set to ImageViewerScrollMode.Auto.

You can use this value to calculate the size of the client area of the control not covered by the visible scrollbars:

            var width = viewer.ControlSize.Width - viewer.HorizontalScrollHeight;
            var height = viewer.ControlSize.Height - viewer.VerticalScrollWidth;
            

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

Reference

ImageViewer Class
ImageViewer Members