topic Re: NewFamilyInstance Workaround in Revit API Forum

NewFamilyInstance Workaround

grahamcook — Mon, 01 Sep 2014 08:43:54 GMT

I thought i would share what appears to be a workaround when placing new instances of families using the NewFamilyInstance method (2014). I was using the following overload to place an electrical socket in a wall:

Document.Create.NewFamilyInstance(XYZ location, FamilySymbol symbol, Element host, Level level, StructuralType structuralType)

This was successfully placing the family instance, problem is i then wanted to flip the face using the familyInstance.flipFacing() method which always returned false even though i could flip the instance through the user interface. But i found if i place the instance, commit the current transaction, then attempt to flip the instance in a new trasnsaction then it worked.

Hope this helps someone else who may be fighting similar issues with the NewFamilyInstance method.

Regards

Graham Cook

Re: NewFamilyInstance Workaround

grahamcook — Mon, 01 Sep 2014 08:54:38 GMT

Actually, doing a Doc.Regenerate() between placing the instance and flipFacing has the same effect and is obviously more straight forward.

Graham Cook

Re: NewFamilyInstance Workaround

jeremytammik — Tue, 02 Sep 2014 07:22:51 GMT

Dear Graham,

Thank you very much for this important hint.

Actually, the topic 'Need to Regenerate' is a big and important one.

Omitting a required regeneration can cause a lot of head scratching, not to mention headache:

http://thebuildingcoder.typepad.com/blog/about-the-author.html#5.33

Cheers,

Jeremy