SurfaceDefinitionDEMFilesAddDEMFile(String, String, Boolean, Double) Method

public SurfaceOperationAddDEMFile AddDEMFile(
	string filename,
	string coordinateSystemCode,
	bool useCustomNullElevation,
	double customeNullElevation
)

Public Function AddDEMFile ( 
	filename As String,
	coordinateSystemCode As String,
	useCustomNullElevation As Boolean,
	customeNullElevation As Double
) As SurfaceOperationAddDEMFile

public:
SurfaceOperationAddDEMFile^ AddDEMFile(
	String^ filename, 
	String^ coordinateSystemCode, 
	bool useCustomNullElevation, 
	double customeNullElevation
)

Parameters

filename  String

The name and path of an existing DEM file.

coordinateSystemCode  String

The coordinate system code to transform the data in the DEM file. For a GridSurface, this parameter must be an empty string "".

useCustomNullElevation  Boolean

Specifies whether use custom null elevation.

customeNullElevation  Double

The value to use for null elevation.

Return Value

1. If the DEM file coordinate system is different from the current coordinate system of the drawing, and you are adding it to a TIN surface, you can specify a coordinate system for the DEM file. The coordinate system you specify for the DEM file should match the data defined in the DEM file itself.
2. DEM files cannot be transformed for grid surfaces.
3. The coordinateSystemCode value "" means that no transformation is needed.

Reference