How to check if the text of an IndependentTag is question mark?

[Anonymous]

Anyone knows if there is a way to check if a material tag is valid a not (question mark) through API? Thanks in advance.

[jeremytammik]

Install RevitLookup and explore the IndependentTag properties.

One of them is TagText:

https://www.revitapidocs.com/2020/8e297dee-920d-f620-6198-0bed494e3f04.htm

Maybe the question mark is a special case and you need to check some of the other properties as well for it.

Please let us know where you find it.

Thank you.

Best regards,

Jeremy

[Anonymous]

Hi Jeremy,

Thanks for your reply.

I checked that the TagText is always empty whether it is question mark or not. I also checked that the IsOrphaned property is always false. And there is no parameter can be helpful. I've no idea how to do the check now.

[jeremytammik]

There are many more properties to check, e.g., TaggedElementId etc.

Are you using RevitLookup?

[Anonymous]

Yes, I'm using RevitLookup. TaggedElementId, GetTaggedReference also no help. I can't find a property useful for this case.

[jeremytammik]

What action in the user interface cases the question mark? What can you do in the UI to make it go away? Analyse the results in RevitLookup.

[jeremytammik]

I just by chance happened to notice that this question of yours has already been raised and answered in previous threads here in the forum, e.g.:

https://forums.autodesk.com/t5/revit-api-forum/find-unhosted-tags/m-p/9049794

[Anonymous]

This still does not work for me. I attached a sample file. Could you please take a look when you are available? Thanks a lot.

[jeremytammik]

New workarounds suggested in the thread on Material Tag created by API does not show material data:

https://forums.autodesk.com/t5/revit-api-forum/material-tag-created-by-api-does-not-show-material-da...

Can you try them out please, and let us know whether they work for you?

Thank you!