Picking New Element Host via API

[Anonymous]

Hello All,

       Does anyone know how to change an Element's host/work plane through the Revit api. I can't find anything in the Revit API that doesn't require deleting and replacing the element. FamilyInstance contains the properties Host, Host Face, and HostParameter... but they're all getters. 

       Thank You!

[jeremytammik · Accepted solution]

Dear James,

Thank you for your query.

Afaik you are perfectly right, and the host element or level or plane can only be set at creation time.

Please file a wish list item in the Revit Idea Station for a possibility to set it.

There is probably one there already that you can vote for and comment on.

Thank you!

Best regards,

Jeremy

[Anonymous]

Wow! It's not even accessible through PostableCommand, yet it applies to half of our fixture and tag families. 

Anyways, Thank you Jeremy! It feels like you're the only one supporting questions from the API community... I appreciate it though!

[Anonymous · Accepted solution]

Link for others to support API Idea suggestion:

https://forums.autodesk.com/t5/revit-ideas/picking-new-element-host-via-api/idi-p/8658294

[jeremytammik]

Dear James,

Thank you very much for your appreciation and wish list entry.

Best regards,

Jeremy

[Anonymous]

Ah! Okay, thank you!

[jeremytammik]

Oops, sorry, it doesn't, I was mixed up.

[Anonymous]

No problem!

[joshua.lumley]

Form class has a Rehost method, is it possible to use this?

[jeremytammik]

Please try it out and let us know!

It sounds like it should do the right thing.

However, I am afraid it might not work in all cases. Look at Diane's note from the AU Revit API panel:

https://thebuildingcoder.typepad.com/blog/2018/11/dashboard-regen-and-revit-api-panel-at-au.html#2.2

• Rehost a family instance
  • Definitely doesn't work on face based but would like it to work in all cases
  • Also needs to work on links

Cheers,

Jeremy