AddDEMFile Method (String, String, Boolean, Double)

Adds DEM file data to a surface with custom null elevation and coordinate system information.

Namespace: Autodesk.Civil.DatabaseServices
Assembly: AeccDbMgd (in AeccDbMgd.dll) Version: 13.2.3892.0

Syntax

C#

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

Visual Basic

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

Visual C++

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

Parameters

filename
Type: System.String
The name and path of an existing DEM file.
coordinateSystemCode
Type: System.String
The coordinate system code to transform the data in the DEM file. For a GridSurface, this parameter must be an empty string "".
useCustomNullElevation
Type: System.Boolean
Specifies whether use custom null elevation.
customeNullElevation
Type: System.Double
The value to use for null elevation.

Remarks

  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.

Exceptions

ExceptionCondition
System.ArgumentException Thrown when:
  1. The Dem file is invalid.
  2. The coordinateSystemCode is invalid.
System.InvalidOperationException Thrown when user specifies a coordinateSystemCode value other than "" for the GridSurface.

See Also