Reading String Data (Group Codes 1000 and 1001)

[dkadish]

Hi,

I'm using the netDxf library and it's been excellent for importing DXF drawings to my application, but I'm having trouble finding the entry for what I am pretty sure is a custom (non-standard) data field. The software I'm writing deals with timber and the width of the timber used is stored using a pair of group codes 1001 and 1000 (see attached dxf for the full file. I have added the .txt extension so it would upload properly.).

Sometime after a LWPOLYLINE entry, the following appears:

1001
TimberData
1000
45x170 C24

The width data I'm looking for is the 45 part of the line 45x170 C24, but I can't figure out how to access these lines using the API.

I am reading the document in using DxfDocument dxfDoc = DxfDocument.Load(dxfFile); and I am able to load and process the LWPOLYLINEs, but I could use some help finding this TimberData.

Thanks!

T1.dxf.txt

[haplokuon]

What you are looking at is what is called Extended Data Information or XData for short. Make a search about "extended data" you will find other users asking similar questions, or just look at issue #331. You can also read what the Autodesk documentation says about "extended data".

Or something like since you already know that there is only one entry in the XDataRecords and it is an string:

entity.XData.TryGetValue("TimberData", out XData xData);
string sectionData = xData?.XDataRecord[0].Value as string;