The PositionValue property specifies the value for the vertical position of the
surface when the DrawFlat property is set to True and the PositionMode
is SurfacePositionMode.CustomValue.
The code below enables the custom value positioning and specifies the value where the
flat surface will be placed.
surface.PositionMode = SurfacePositionMode.CustomValue
surface.PositionValue = 1.2
surface.PositionMode = SurfacePositionMode.CustomValue;
surface.PositionValue = 1.2;
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