topic Re: ### - Please help for getting all linked AutoCAD files in Revit in Revit API Forum

### - Please help for getting all linked AutoCAD files in Revit

pvirke — Mon, 10 Apr 2023 19:20:27 GMT

### - Please help for getting all linked AutoCAD files in Revit

Hi All,

I am trying to get all the linked AutoCAD files in Revit Api

The way I am coding is like the following:
##############################################

// Find all linked AutoCAD Files in the project
FilteredElementCollector cadLinkCollector = new FilteredElementCollector(doc);
cadLinkCollector.OfClass(typeof(ImportInstance)).Cast<ImportInstance>().Where(e => ((ImportInstance)e).IsLinked && ((ImportInstance)e).Category.Name == "Imported Categories");
IList<Element> cadLinks = cadLinkCollector.ToElements();

##############################################

But I think something is wrong for the collector method.

Please help me !!!!!!!!!!!!!!!!!!!!!!

Re: ### - Please help for getting all linked AutoCAD files in Revit

Yien_Chao — Mon, 10 Apr 2023 19:31:40 GMT

hello

Where(e => ((ImportInstance)e).IsLinked && ((ImportInstance)e).Category.Name == "Imported Categories")

1. what is the "e" after ImportInstance??

2. Category.Name gives the CAD file name like A010.DWG not "Imported Categories"

Re: ### - Please help for getting all linked AutoCAD files in Revit

pvirke — Mon, 10 Apr 2023 20:54:35 GMT

1. e is the ImportInstance

I can make a definition for it but it won't affect anything;

2. Category.Name should not be the cad file name, and it should be like "CADLink" or "Imported Categories".

What I need is that find out all the linked AutoCAD files in the model and make a Ilist<Element>...

Re: ### - Please help for getting all linked AutoCAD files in Revit

pvirke — Mon, 10 Apr 2023 20:55:35 GMT

Thanks for your help! Yien!

Re: ### - Please help for getting all linked AutoCAD files in Revit

Yien_Chao — Mon, 10 Apr 2023 23:23:45 GMT

Strange. On my side it really is the cad file's name.

Re: ### - Please help for getting all linked AutoCAD files in Revit

pvirke — Tue, 11 Apr 2023 14:54:49 GMT

You're right Yien!

Category.Name is "Link Name" in Revit!
Then how can I get the linked CAD files in Revit?

Re: ### - Please help for getting all linked AutoCAD files in Revit

Sean_Page — Tue, 11 Apr 2023 15:00:42 GMT

Just know that if a link is Not Loaded, then the Category will return a Null.

Re: ### - Please help for getting all linked AutoCAD files in Revit

lmolina6V6K7 — Thu, 23 Apr 2026 21:48:46 GMT

Hello,

Did you get a valid response here?

I need to obtain the file path when the CAD link is coming from Autodesk Forma formerly Docs.