BooleanOperationsUtils.ExecuteBooleanOperation InvalidOperationException Casue

[kimhjDGFZX]

Hi All,

BooleanOperationsUtils.ExecuteBooleanOperation(), When I use this method, I often get an InvalidOperationException.

I would like to know if there are specific criteria for causing that error.

For example, it occurs when elements intersect at an angle below a certain angle, etc.

I hope there are rules for this or some documentation I can refer to.

thanks for reading!

[jeremy_tammik · Accepted solution]

Sorry about that. It has been mentioned before that ExecuteBooleanOperation can run into issues. Unfortunately, afaik, there is no list of the exact criteria which might cause a problem. Various ways of handling the situation and some possible workarounds have been discussed here in the past. You can search for ExecuteBooleanOperation or just Boolean to find some of them:

• https://forums.autodesk.com/t5/forums/searchpage/tab/message?advanced=false&allow_punctuation=false&...
• https://forums.autodesk.com/t5/forums/searchpage/tab/message?filter=location&q=Boolean&noSynonym=fal...

The development team are aware of these issues. This is one of the more exhaustive discussions on the topic, ongoing ever since 2017, including a suggestion for a non-trivial workaround:

• https://forums.autodesk.com/t5/revit-api-forum/boolean-operation-fail/m-p/12839281#M79543

If you would like to provide a complete minimal reproducible case, I can share that with the development team for further analysis:

• https://thebuildingcoder.typepad.com/blog/about-the-author.html#1b