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Reserved CAD fields for MicroStation V8 DGN formats

The following table lists the field names that are reserved for reading and writing V8 DGN CAD data in ArcGIS Pro. You can use them to override the default output of the Export To CAD tool by adding them to the input feature class table. Fields marked as read-only are exclusive to direct-read CAD (virtual) attribute tables and cannot be used.

CategoryField nameData typeLengthDescription

Element properties

OID

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

CadModel

String

255

A DGN file component that contains elements

CADModelID

String

255

String representing the index number of the CAD model

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.

  • This value specifies the z-coordinate of all vertices of an entity.
  • The field name Contour is a valid alternative to Elevation.

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

ObjectHandle

String

255

Hexadecimal identifier of associated tag elements for TextPoint or Annotation feature classes

MsLink_Oracle

Long

4

A unique identifier used as a primary key for linking a graphic element to a record in an external database table

MsCtlg_Oracle

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

QrotW

Double

8

The w-coordinate quaternion (3D) rotation value

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

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.

  • An attribute value of 1 corresponds to Thawed.
  • An attribute value of 0 corresponds to Frozen.

LyrLntype

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.

  • An attribute value of 1 corresponds to Locked.
  • An attribute value of 0 corresponds to Unlocked.

LyrOn

Short

2

The on/off state of the CAD drawing layer.

  • An attribute value of 1 corresponds to on.
  • An attribute value of 0 corresponds to off.

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

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

FontName

String

255

Text entity CAD font name

TxtDir

Short

2

The multiline text direction parameter

TxtMemo

String

2048

The entire text string, not truncated. However, this field has a limit of 4,000 characters..

TxtOblique

Double

8

The text entity oblique angle

TxtRefWd

Double

8

The multiline text width factor.

  • Read-only

TxtWidth

Double

8

The text entity width factor

  • Read-only

HorizontalAlignment

Integer

4

The text entity horizontal alignment parameter

VerticalAlignment

Integer

4

The text entity vertical alignment parameter

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

32

The file extension associated with the CAD format

DocUpdate

Date

255

The time stamp of the last update to that entity in CAD

DocVer

String

16

The CAD format version

DocId

Double

8

CAD document identification number

Reserved CAD fields for MicroStation V8 DGN formats

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