Issues

• Converting existing working DWG file to DXF is creating bad spline data

  bug
  DomCR/ACadSharp#1299 · Filter by author donnyv opened on Oct 14, 2026

• DWG (AC1032): an MTEXT with only the text frame flag makes AutoCAD reject the file

  DomCR/ACadSharp#1297 · Filter by author mdelanno opened on Oct 14, 2026

• new Insert(BlockRecord) deep-copies nested blocks: quadratic time and stack overflow

  DomCR/ACadSharp#1283 · Filter by author rmzncakir opened on Oct 11, 2026

• DwgWriter: extended data over 32 767 bytes per application overflows its size; the object is lost on read

  DomCR/ACadSharp#1282 · Filter by author rmzncakir opened on Oct 11, 2026

• DXF: stack overflow (process crash) on long runs of comments, XDATA application blocks or clip boundary groups

  DomCR/ACadSharp#1281 · Filter by author rmzncakir opened on Oct 11, 2026

• DXF: $DWGCODEPAGE lookup uses culture-sensitive ToLower (ANSI_1254 not found under tr-TR)

  DomCR/ACadSharp#1280 · Filter by author rmzncakir opened on Oct 11, 2026

• DXF: VERTEX without subtype marker throws InvalidCastException (VertexPlaceholder to Vertex2D), whole file fails

  DomCR/ACadSharp#1279 · Filter by author rmzncakir opened on Oct 11, 2026

• R12 DXF: POLYLINE/VERTEX with subclass markers dropped ("same key has already been added")

  DomCR/ACadSharp#1278 · Filter by author rmzncakir opened on Oct 11, 2026

• DWG writer corrupts annotative MLeader context objects on a no-op roundtrip

  bug
  DomCR/ACadSharp#1277 · Filter by author mme1950 opened on Oct 9, 2026
  1

• DwgReader leaves the value of a table block cell as a default CadValue

  DomCR/ACadSharp#1264 · Filter by author ilCosmico opened on Sep 30, 2026

• DWG writer: GeoData version R2009 omits the trailing Civil-3D data block — AutoCAD fails to open (eFilerError)

  DomCR/ACadSharp#1261 · Filter by author havergoodtime1ky opened on Sep 28, 2026

• DxfWriter: unrecognized $DWGCODEPAGE name for Korean (kcs5601), and the fix (ANSI_949) silently writes UTF-8 bytes instead

  bug
  DomCR/ACadSharp#1259 · Filter by author K2D2H4 opened on Sep 23, 2026
  1

• DXF written by DxfWriter is rejected by AutoCAD: three group-code issues (CLASSES 92/93, HATCH 47, AcDbDimStyleTable 71/340)

  bug
  DomCR/ACadSharp#1253 · Filter by author YATA-NODE opened on Sep 13, 2026
  2

• Arc.ApplyTransform: rotation moves the center correctly but rotates the angles backwards

  DomCR/ACadSharp#1250 · Filter by author f-n-m-4711 opened on Sep 7, 2026

• DwgWriter silently loses SummaryInfo property values ≥16,383 chars; larger values corrupt the file for ODA-based readers

  DomCR/ACadSharp#1234 · Filter by author holohup opened on Aug 31, 2026

• DxfWriter silently omits 3DSOLID/REGION entities — blocks made of solids come out empty, with no notification

  feature
  DomCR/ACadSharp#1195 · Filter by author kreynolds77 opened on Aug 19, 2026
  2

• Need to Help on Dynamic block properties

  help wanted
  DomCR/ACadSharp#1185 · Filter by author SRajapandi7 opened on Aug 18, 2026
  1

• ShadePlotDPI setter throws on file values — DWG reader drops all layouts

  DomCR/ACadSharp#1184 · Filter by author lukaszm opened on Aug 18, 2026

• writeBlockHeader crashes with ArgumentOutOfRangeException on anonymous blocks with name length < 2

  bug
  DomCR/ACadSharp#1181 · Filter by author XerolySkinner opened on Aug 12, 2026

• DwgReader leaves Leader.TextWidth/TextHeight at 0 for text-annotated LEADERs — DXF group 41 comes out 0.0 and downstream consumers drop the hook line

  bug
  DomCR/ACadSharp#1180 · Filter by author dwscat20 opened on Aug 9, 2026
  3

• Autocad Electrical Schematics CAD drawings read/write.

  DomCR/ACadSharp#1175 · Filter by author SRajapandi7 opened on Aug 4, 2026
  1

• Insert entities silently dropped when reading AC1032 (R2018) DWG files

  bug
  DomCR/ACadSharp#1172 · Filter by author rafaelfrancisco-contato opened on Jul 31, 2026
  2

• System.NotImplementedException: 'The method or operation is not implemented.'

  bug
  DomCR/ACadSharp#1170 · Filter by author arshadrasheed opened on Jul 31, 2026
  1

• Feature request: DWG file support

  DomCR/ACadSharp#1166 · Filter by author massoudmaboudi opened on Jul 31, 2026
  5

• DWG writer: inverted LTYPE handle condition corrupts AC1014 (R14) files

  DomCR/ACadSharp#1161 · Filter by author mcyike5 opened on Jul 25, 2026