This .NET class wraps the AcDbRasterVariables::FrameSettings ObjectARX class.

Public Enum FrameSetting
  ImageFrameAbove = 1
  ImageFrameBelow = 2
  ImageFrameInvalid = -1
  ImageFrameOff = 0
  ImageFrameOnNoPlot = 3
End Enum

public enum FrameSetting {
  ImageFrameAbove = 1,
  ImageFrameBelow = 2,
  ImageFrameInvalid = -1,
  ImageFrameOff = 0,
  ImageFrameOnNoPlot = 3
}