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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

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

A valid value overrides the default output element type. Some element types require companion fields that specify parameters. For example:

  • TEXT requires the TxtValue field to specify the text string.

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

  • 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

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

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

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

  • 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

TxtStyle

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

TxtHt

Double

8

The text entity height

TxtMemo

String

2048

The entire text string, not truncated

TxtOblique

Double

8

The text entity oblique angle

TxtRefWd

Double

8

The multiline text width factor

  • Read-only

TxtRotate

Double

8

The text entity rotation angle

TxtValue

String

255

The text string for new text created from point features when the field CADType contains the keyword TEXT.

TxtWidth

Double

8

The text entity width factor

  • Read-only

VertAlign

String

32

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

255

The file extension associated with the CAD format

DocVer

String

16

The CAD format version

Reserved CAD fields for MicroStation V8 DGN formats