topic Re: Shared Nested families within a Selection in Revit API Forum

Shared Nested families within a Selection

RickyBell — Fri, 10 Jan 2014 18:39:04 GMT

I have an add-on that loops through selected components with this code.

foreach (Element ele in sel.Elements)

I'm only getting the parent family information in my selection.

Is there a way to retreive the nested components?

Re: Shared Nested families within a Selection

Anonymous — Mon, 13 Jan 2014 07:33:59 GMT

Hi, you can retreive the elementId's of nested fams like so :

ElementSet elemset = commandData.Application.ActiveUIDocument.Selection.Elements;

foreach (Element el in elemset)
{
FamilyInstance fi = el as FamilyInstance;

var subs = fi.GetSubComponentIds();
//subs is the list of nested families

}

Kind regards,

Remy.

Re: Shared Nested families within a Selection

RickyBell — Tue, 14 Jan 2014 15:15:34 GMT

Thanks for the reply. Using your code from the project, I get the same results. Just the parent information. I've included the component I'm working with. This Flange Adapter has three subComponents, the last SubComponent has a subComponent of it's own.

Ideally, I'd like to be able to loop through all of these items.

Thanks again for any help!

Re: Shared Nested families within a Selection

Anonymous — Tue, 14 Jan 2014 16:13:33 GMT

Okay, This is how it goes :

// nested families selecteren
ElementSet elemset = commandData.Application.ActiveUIDocument.Selection.Elements;

foreach (Element el in elemset)
{
FamilyInstance fi = el as FamilyInstance;

IList<ElementId> subs = fi.GetSubComponentIds().ToList();

Element ele = doc.GetElement(subs[0]); // okay, do null check if family has no subcomponents
Parameter par = ele.get_Parameter(buildin_parameter); // or just loop al ele.paramters for the one you need

}

Re: Shared Nested families within a Selection

RickyBell — Wed, 15 Jan 2014 15:14:19 GMT

Thanks for your help. I was able to get it working using this code idea here:

http://revitapisearch.com/html/be37702c-1dcd-bc14-aa35-45f06f20210a.htm

ICollection was the difference. I took my loop three layers deep to get all the SubComponents. Thanks again!

Re: Shared Nested families within a Selection

Anonymous — Wed, 15 Jan 2014 15:53:53 GMT

Super 🙂