topic Re: Assign Material to generic model framing instance in Revit API Forum

Assign Material to generic model framing instance

GeomGym — Fri, 10 May 2013 10:34:18 GMT

Hi All,

Can someone please advise how to assign the structural material to an instance created from a generic model family, type set to Framing? I've tried a few like property StructuralMaterialId or BuiltInParameter.MATERIAL_ID_PARAM

with no luck. I can manually set it.

I can post a revit file if needed.

Thanks in advance,

Jon

Re: Assign Material to generic model framing instance

Anonymous — Fri, 10 May 2013 15:19:29 GMT

I too am struggling with this issue. I've got a framing family composed of multiple nested generics that all have associated material parameters. I need to be able to assign/change the material through the API. I can do it manually though the UI, and it works beautifully. It's just a giant pain in the --- to keep having to do it this way.

Re: Assign Material to generic model framing instance

saikat — Thu, 30 May 2013 17:25:50 GMT

Here is something I tried quickly and it seemed to work fine. For testing purposes, I have hard coded the 'Carbon Steel' material ID in the code and used that ElementId in the material assignment process:

UIApplication uiApp = commandData.Application;

UIDocumentuiDoc = uiApp.ActiveUIDocument;

foreach (Element ele in

uiApp.ActiveUIDocument.Selection.Elements)

{

FamilyInstance box = ele asFamilyInstance;

if (null!= box)

{

using (Transaction trans = newTransaction(uiDoc.Document, "SetMaterial"))

{

trans.Start();

box.get_Parameter(

BuiltInParameter.STRUCTURAL_MATERIAL_PARAM).Set(newElementId(164753));

trans.Commit();

}

and eventually was able to see this:

Re: Assign Material to generic model framing instance

GeomGym — Fri, 31 May 2013 13:05:40 GMT

Thanks for the reply, that indeed does seem to be the solution.

Cheers,

Jon