Reserved CAD fields for DGN files

The following table defines reserved CAD field schema for reading and writing supported MicroStation elements.

Category	Field name	Data type	Length	Description
Element properties	FID	ObjectID	4	A unique feature identifier. Read-only.
	Shape	Geometry	-	The ArcGIS area shape representing the spatial extent of the CAD file. Read-only.
	Entity	String	16	The CAD entity. Read-only.
	Handle	String	16	A unique CAD entity identifier. Read-only.
	Angle	Double	8	Rotation angle in degrees. Point and Annotation feature classes only.
	<attribute name>	Text, Long, or Double	8	A named user-defined textual entity used for storing data.
	CadType	String	255	Overrides the default output entity type.
	CadModel	String	255	A DGN file component that contains elements.
	Class	String	255	The entity class designation.
	Color	Short	2	The display color of the entity expressed as an integer.
	Elevation	Double	8	The z-coordinate value of an entity. For entities with multiple z-coordinates, this is the z-coordinate for the first point of the entity as defined by the CAD application.
	EntColor	Short	2	The assigned color of the entity expressed as an integer.
	EntLinetype	String	255	The assigned line type of the entity.
	EntLineWt	Short	2	The assigned line weight of an entity.
	Fill	Short	2	Fill pattern name.
	GGroup	Short	2	The graphic group to which an entity belongs.
	LineWt	Short	2	The display line weight of an entity.
	Linetype	String	255	The display line type of the entity.
	LTScale	Double	8	The scale of the entity's line type.
	MSLink-DMRS	Long	4	A unique identifier used as a primary key for linking a graphic element to a record in an external database table. Read-only.
	MSCtlg-DMRS	Long	4	An identifier in the MSCatalog relation table that uniquely identifies the table containing the MSLink. The MSCatalog table is used by the Microstation database server and stored in the target database. Read-only.
	QrotX	Double	8	The x-coordinate quaternion (3D) rotation value.
	QrotY	Double	8	The y-coordinate quaternion (3D) rotation value.
	QrotZ	Double	8	The z-coordinate quaternion (3D) rotation value.
	RefName	String	255	The name of the parent object in which the entity resides.
	ScaleX	Double	8	The x-coordinate scale value. Point and Annotation only.
	ScaleY	Double	8	The y-coordinate scale value. Point and Annotation only.
	ScaleZ	Double	8	The z-coordinate scale value. Point and Annotation only.
Layer properties	Layer	String	255	The CAD drawing layer name.
	Level	Long	4	The CAD drawing layer number identifier.
	LvlDesc	String	255	The description of the CAD level. Used only with MicroStation V7 and earlier releases.
	LvlPlot	Short	2	The CAD plot order of the drawing levels.
	LyrColor	Short	2	The CAD drawing layer color expressed as an integer.
	LyrFrzn	Short	2	The freeze/thaw state of the CAD drawing layer.
	LyrLinetype	String	255	The line type of the CAD drawing layer in which the entity resides.
	LyrLineWt	Short	2	The line weight of the CAD drawing layer in which the entity resides.
	LyrLock	Short	2	The lock/unlock state of the CAD drawing layer.
	LyrOn	Short	2	The on/off state of the CAD drawing layer.
Text properties	FontId	Short	2	The ArcGIS text symbol ID. Read-only.
	Height	Double	8	The text height in CAD units.
	LnSpace	Short	2	The multiline text spacing type. Read-only.
	SpaceFact	Double	8	The multiline text spacing factor. Read-only.
	Style	String	255	The text style.
	Text	String	255	The text string.
	TxtAttach	Short	2	The multiline text attachment parameter.
	TxtBoxHt	Double	8	The text entity bounding box height.
	TxtBoxWd	Double	8	The text entity bounding box width.
	TxtDir	Short	2	The multiline text direction parameter.
	TxtFont	String	255	The text entity CAD font.
	TxtJust	String	32	The text entity justification parameter. Read-only.
	TxtMemo	String	2048	The entire text string not truncated.
	TxtOblique	Double	8	The text entity oblique angle. Read-only.
	TxtRefWd	Double	8	The multiline text width factor. Read-only.
	TxtWidth	Double	8	The text entity width factor. Read-only.
	VertAlign	String	32	The text entity vertical alignment parameter. Read-only.
Document properties	DocName	String	255	The file name of the CAD file including the extension.
	DocPath	String	4096	The full path of the CAD file including the file name. DocPath can be used to export a single feature class to multiple CAD drawings with the Export To CAD tool when Ignore Paths is unchecked.
	DocType	String	255	The file extension associated with the CAD format.
	DocVer	String	16	The CAD format version.

Reserved CAD field schema for MicroStation DGN