This .NET class wraps the AcDb::DxfCode ObjectARX enum. 

This enumerated type contains all the primary DXF group code values. 

Ranges of DXF group codes represent certain data types. For example, the codes from 40 to 49 are floating point data values. For many of these ranges, only the first code has an enumerated type name. 

To use one of the code values that is not in the enumerated type, you will need to add an integer to the enumerated type value name. For example, to use DXF group code 41, in your code you would use (DxfReal+1). 

This enumerated type also contains names that have the same integer value. For example, ShapeName and BlockName both have an integer value of 2. This duplication occurs because within AutoCAD the same code value (the integer value) may have different meanings for different contexts. So, each context has a different name in the enumerated type.

Public Enum DxfCode
  Alpha = 440
  Angle = 50
  ArbitraryHandle = 320
  AttributePrompt = 3
  AttributeTag = 2
  BinaryChunk = 310
  BlockName = 2
  Bool = 290
  CircleSides = &H48
  CLShapeName = 4
  CLShapeText = 9
  Color = &H3e
  ColorName = 430
  ColorRgb = 420
  Comment = &H3e7
  ControlString = &H66
  DashLength = &H31
  Description = 3
  DimBlk1 = 6
  DimBlk2 = 7
  DimensionAlternativePrefixSuffix = 4
  DimensionBlock = 5
  DimPostString = 3
  DimStyleName = 3
  DimVarHandle = &H69
  Elevation = &H26
  EmbeddedObjectStart = &H65
  End = -1
  ExtendedDataAsciiString = &H3e8
  ExtendedDataBinaryChunk = &H3ec
  ExtendedDataControlString = &H3ea
  ExtendedDataDist = &H411
  ExtendedDataHandle = &H3ed
  ExtendedDataInteger16 = &H42e
  ExtendedDataInteger32 = &H42f
  ExtendedDataLayerName = &H3eb
  ExtendedDataReal = &H410
  ExtendedDataRegAppName = &H3e9
  ExtendedDataScale = &H412
  ExtendedDataWorldXCoordinate = &H3f3
  ExtendedDataWorldXDir = &H3f5
  ExtendedDataWorldXDisp = &H3f4
  ExtendedDataWorldYCoordinate = &H3fd
  ExtendedDataWorldYDir = &H3ff
  ExtendedDataWorldYDisp = &H3fe
  ExtendedDataWorldZCoordinate = &H407
  ExtendedDataWorldZDir = &H409
  ExtendedDataWorldZDisp = &H408
  ExtendedDataXCoordinate = &H3f2
  ExtendedDataYCoordinate = &H3fc
  ExtendedDataZCoordinate = &H406
  ExtendedInt16 = 400
  FirstEntityId = -2
  GradientAngle = 460
  GradientColCount = &H1c5
  GradientColVal = &H1cf
  GradientName = 470
  GradientObjType = 450
  GradientPatType = &H1c3
  GradientShift = &H1cd
  GradientTintType = &H1c4
  GradientTintVal = &H1ce
  Handle = 5
  HardOwnershipId = 360
  HardPointerId = 340
  HasSubentities = &H42
  HeaderId = -2
  Int16 = 70
  Int32 = 90
  Int64 = 160
  Int8 = 280
  Invalid = -9999
  LayerLinetype = &H3d
  LayerName = 8
  LayoutName = 410
  LinetypeAlign = &H48
  LinetypeElement = &H31
  LinetypeName = 6
  LinetypePdc = &H49
  LinetypeProse = 3
  LinetypeScale = &H30
  LineWeight = 370
  MlineOffset = &H31
  MlineStyleName = 2
  NormalX = 210
  NormalY = 220
  NormalZ = 230
  Operator = -4
  PixelScale = &H2f
  PlotStyleNameId = 390
  PlotStyleNameType = 380
  PReactors = -5
  Real = 40
  RegAppFlags = &H47
  RenderMode = &H119
  ShapeName = 2
  ShapeScale = &H2e
  ShapeXOffset = &H2c
  ShapeYOffset = &H2d
  SoftOwnershipId = 350
  SoftPointerId = 330
  Start = 0
  Subclass = 100
  SymbolTableName = 2
  SymbolTableRecordComments = 4
  SymbolTableRecordName = 2
  Text = 1
  TextBigFontFile = 4
  TextFontFile = 3
  TextStyleName = 7
  Thickness = &H27
  TxtSize = 40
  TxtStyleFlags = &H47
  TxtStylePSize = &H2a
  TxtStyleXScale = &H29
  UcsOrg = 110
  UcsOrientationX = &H6f
  UcsOrientationY = &H70
  ViewBackClip = &H2c
  ViewBrightness = &H8d
  ViewContrast = &H8e
  ViewFrontClip = &H2b
  ViewHeight = &H2d
  ViewLensLength = &H2a
  ViewMode = &H47
  ViewportActive = &H44
  ViewportAspect = &H29
  ViewportGrid = &H4c
  ViewportHeight = 40
  ViewportIcon = &H4a
  ViewportNumber = &H45
  ViewportSnap = &H4b
  ViewportSnapAngle = 50
  ViewportSnapPair = &H4e
  ViewportSnapStyle = &H4d
  ViewportTwist = &H33
  ViewportVisibility = &H43
  ViewportZoom = &H49
  ViewWidth = &H29
  Visibility = 60
  XCoordinate = 10
  XDataStart = -3
  XDictionary = -6
  XInt16 = 170
  XReal = 140
  XRefPath = 1
  XTextString = 300
  XXInt16 = 270
  YCoordinate = 20
  ZCoordinate = 30
End Enum

public enum DxfCode {
  Alpha = 440,
  Angle = 50,
  ArbitraryHandle = 320,
  AttributePrompt = 3,
  AttributeTag = 2,
  BinaryChunk = 310,
  BlockName = 2,
  Bool = 290,
  CircleSides = 0x48,
  CLShapeName = 4,
  CLShapeText = 9,
  Color = 0x3e,
  ColorName = 430,
  ColorRgb = 420,
  Comment = 0x3e7,
  ControlString = 0x66,
  DashLength = 0x31,
  Description = 3,
  DimBlk1 = 6,
  DimBlk2 = 7,
  DimensionAlternativePrefixSuffix = 4,
  DimensionBlock = 5,
  DimPostString = 3,
  DimStyleName = 3,
  DimVarHandle = 0x69,
  Elevation = 0x26,
  EmbeddedObjectStart = 0x65,
  End = -1,
  ExtendedDataAsciiString = 0x3e8,
  ExtendedDataBinaryChunk = 0x3ec,
  ExtendedDataControlString = 0x3ea,
  ExtendedDataDist = 0x411,
  ExtendedDataHandle = 0x3ed,
  ExtendedDataInteger16 = 0x42e,
  ExtendedDataInteger32 = 0x42f,
  ExtendedDataLayerName = 0x3eb,
  ExtendedDataReal = 0x410,
  ExtendedDataRegAppName = 0x3e9,
  ExtendedDataScale = 0x412,
  ExtendedDataWorldXCoordinate = 0x3f3,
  ExtendedDataWorldXDir = 0x3f5,
  ExtendedDataWorldXDisp = 0x3f4,
  ExtendedDataWorldYCoordinate = 0x3fd,
  ExtendedDataWorldYDir = 0x3ff,
  ExtendedDataWorldYDisp = 0x3fe,
  ExtendedDataWorldZCoordinate = 0x407,
  ExtendedDataWorldZDir = 0x409,
  ExtendedDataWorldZDisp = 0x408,
  ExtendedDataXCoordinate = 0x3f2,
  ExtendedDataYCoordinate = 0x3fc,
  ExtendedDataZCoordinate = 0x406,
  ExtendedInt16 = 400,
  FirstEntityId = -2,
  GradientAngle = 460,
  GradientColCount = 0x1c5,
  GradientColVal = 0x1cf,
  GradientName = 470,
  GradientObjType = 450,
  GradientPatType = 0x1c3,
  GradientShift = 0x1cd,
  GradientTintType = 0x1c4,
  GradientTintVal = 0x1ce,
  Handle = 5,
  HardOwnershipId = 360,
  HardPointerId = 340,
  HasSubentities = 0x42,
  HeaderId = -2,
  Int16 = 70,
  Int32 = 90,
  Int64 = 160,
  Int8 = 280,
  Invalid = -9999,
  LayerLinetype = 0x3d,
  LayerName = 8,
  LayoutName = 410,
  LinetypeAlign = 0x48,
  LinetypeElement = 0x31,
  LinetypeName = 6,
  LinetypePdc = 0x49,
  LinetypeProse = 3,
  LinetypeScale = 0x30,
  LineWeight = 370,
  MlineOffset = 0x31,
  MlineStyleName = 2,
  NormalX = 210,
  NormalY = 220,
  NormalZ = 230,
  Operator = -4,
  PixelScale = 0x2f,
  PlotStyleNameId = 390,
  PlotStyleNameType = 380,
  PReactors = -5,
  Real = 40,
  RegAppFlags = 0x47,
  RenderMode = 0x119,
  ShapeName = 2,
  ShapeScale = 0x2e,
  ShapeXOffset = 0x2c,
  ShapeYOffset = 0x2d,
  SoftOwnershipId = 350,
  SoftPointerId = 330,
  Start = 0,
  Subclass = 100,
  SymbolTableName = 2,
  SymbolTableRecordComments = 4,
  SymbolTableRecordName = 2,
  Text = 1,
  TextBigFontFile = 4,
  TextFontFile = 3,
  TextStyleName = 7,
  Thickness = 0x27,
  TxtSize = 40,
  TxtStyleFlags = 0x47,
  TxtStylePSize = 0x2a,
  TxtStyleXScale = 0x29,
  UcsOrg = 110,
  UcsOrientationX = 0x6f,
  UcsOrientationY = 0x70,
  ViewBackClip = 0x2c,
  ViewBrightness = 0x8d,
  ViewContrast = 0x8e,
  ViewFrontClip = 0x2b,
  ViewHeight = 0x2d,
  ViewLensLength = 0x2a,
  ViewMode = 0x47,
  ViewportActive = 0x44,
  ViewportAspect = 0x29,
  ViewportGrid = 0x4c,
  ViewportHeight = 40,
  ViewportIcon = 0x4a,
  ViewportNumber = 0x45,
  ViewportSnap = 0x4b,
  ViewportSnapAngle = 50,
  ViewportSnapPair = 0x4e,
  ViewportSnapStyle = 0x4d,
  ViewportTwist = 0x33,
  ViewportVisibility = 0x43,
  ViewportZoom = 0x49,
  ViewWidth = 0x29,
  Visibility = 60,
  XCoordinate = 10,
  XDataStart = -3,
  XDictionary = -6,
  XInt16 = 170,
  XReal = 140,
  XRefPath = 1,
  XTextString = 300,
  XXInt16 = 270,
  YCoordinate = 20,
  ZCoordinate = 30
}