Set Formula in Family

[Anonymous]

Hello All!

I was browsing around the api documentation and found a SetFormula method but am not quite sure how it used. I am wanting to set the formula for a specific family. But my searches on the forum and elsewhere of google have not yielded many results unless I am not understanding something. How would I get a specific family in a project, then set the formula on the family?

Something like MyTestFamily.SetFormula mytestFormulaField myformula

Thanks in advance all!

[Anonymous]

Hello Samuel,

Well, first I think you need to actually use that on a Family document type. See this link:

http://thebuildingcoder.typepad.com/blog/2009/11/family-parameter-value.html

And then you could use that formula in the family you want

http://www.revitapidocs.com/2015/cdc3156c-0334-0bba-70af-1df78fb18b50.htm

Cheers

[Anonymous]

Ok, I am beginning to understand now. Is there anyway to specifically load a family via the API? like search for it in the project. Something like

Family myFamily = new MyTestFamily()

From what I am understanding, the method you linked (which was a great resource I am going to use that for sure) only works via user input and when they are currently looking at the document. Is there anyway I can automate that process?

Thank you for the reply! Im fairly proficient in programming, but still learning the ropes of Revit.

[Anonymous · Accepted solution]

Hello Samuel,

In order to automatize, perhaps try using the 

FilteredElementCollector families
      = new FilteredElementCollector( doc )
        .OfClass( typeof( Family ) );

To get all families in the project, and then use a foreach loop

foreach( Family f in families )
    {
       // do your thing
    }

Inside the foreach, you select the family you want to work on, or work on all of them. By the way, all this info is in this link:

http://thebuildingcoder.typepad.com/blog/2014/09/modifying-saving-and-reloading-families.html

Cheers

Ruben

[Anonymous]

Awesome Thank you! I will look into implementing that. I appreciate all the help 😄 I will also take another look at that link for things that I most likely (and obviously) missed.

Thanks!