Can't get the GetFamilySymbolIds of a specific family

Anonymous — Fri, 29 Oct 2021 01:44:56 GMT

I am trying to get the FamilySymbol ref to the CurrentType of a specific family which is loaded by .rfa document.I can get the family of document.but when I use the "GetFamilySymbolIds" method to get all familySymbolIds,it returns a empty set.The code as follow:

string rfa = @"E:\work\door.rfa"; Application application = commandData.Application.Application; Document doc = application.OpenDocumentFile(rfa); if (!doc.IsFamilyDocument) { TaskDialog.Show("Tips", "It's not a family doucument"); return Result.Failed; } Family family = doc.OwnerFamily; if (family == null) { TaskDialog.Show("Tips", "family == null"); return Result.Failed; } FamilyManager familyManager = doc.FamilyManager; FamilyType familyType = familyManager.CurrentType; ISet<ElementId> familySymbolIds = family.GetFamilySymbolIds(); if (familySymbolIds == null) { TaskDialog.Show("Tips", "familySymbolIds == null"); return Result.Failed; } foreach(ElementId symbolId in familySymbolIds) { FamilySymbol familySymbol = doc.GetElement(symbolId) as FamilySymbol; if (familySymbol.Name == familyType.Name) { //We find the current family symbol of the rfa document; break; } }

can anybody help me to find the promble,and the .rfa file is attached

Re: Can't get the GetFamilySymbolIds of a specific family

jeremy_tammik — Fri, 29 Oct 2021 10:27:30 GMT

I believe the Family class represents the family definition that has been loaded into a project.

I do not believe that you can use the Family class in the RFA family editor context, and hence not its GetFamilySymbolIds method either.

I guess the articles on the Family (definition) API will provide a good place to start for understanding the difference between the project and family editor contexts:

https://thebuildingcoder.typepad.com/blog/about-the-author.html#5.25

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Can't get the GetFamilySymbolIds of a specific family

Re: Can't get the GetFamilySymbolIds of a specific family