topic Re: .GetLinkDocument() returns 'None' in Revit API Forum

.GetLinkDocument() returns 'None'

adkaJK5HX — Wed, 22 May 2024 18:57:46 GMT

Hello!

I try to get the linked document, however when Im applying GetLinkDocument() method on revit link instance it returns 'none'

Re: .GetLinkDocument() returns 'None'

jeremy_tammik — Thu, 23 May 2024 07:51:17 GMT

This looks like a typical example of a trusting human assuming and hoping that a computer will do what they think it should do, and not what they tell it to do. As far as I can see from your screen snapshot, your code looks like this:

81 linked_doc = link. GetLinkDocument() 82 print(link, linked doc)

You initialise a variable with an underscore, linked_doc.

Then, in the call to print, you list two separate new uninitialised variables, linked and doc.

They are both null, of course.

Re: .GetLinkDocument() returns 'None'

adkaJK5HX — Thu, 23 May 2024 09:13:38 GMT

Thank you for the reply, but there is an underscore - it was just hidden under the green line I have used to highlight the variable. If I would try to print a variable that is not defined, I would get just an error.

Re: .GetLinkDocument() returns 'None'

jeremy_tammik — Thu, 23 May 2024 09:37:03 GMT

Oh, sorry. One danger of posting screen snapshots instead of source code text...

Re: .GetLinkDocument() returns 'None'

jeremy_tammik — Thu, 23 May 2024 09:38:35 GMT

Taking another look, I must mention that ToElements()[0] is potentially a lot more expensive than FirstElement()...

Re: .GetLinkDocument() returns 'None'

jeremy_tammik — Thu, 23 May 2024 09:43:46 GMT

Sorry, I see no obvious reason for the None return.