Get FULL Face GUID

[Jaime_Alonso]

I have been trying to get the full GUID of a selected surface from a pickobject selection. By full, I mean similar to the following; 

b3195d1c-3720-465c-bfba-a81d6748d14a-00047630:10:SURFACE

I select the faces successfully via;

faces = uidoc.Selection.PickObjects(ObjectType.Face, selFilter, "Select Multiple Faces");

but then unable to get the guid with that format even though I tried;

face.ElementId.ToString()

face.ElementId.GetType().GUID.ToString()

and others

Any help would be much appreciated

Thanks

[RPTHOMAS108 · Accepted solution]

Selection.PickObjects returns a list of Reference.

Reference has the member Reference.ConvertToStableRepresentation(Document).

[Jaime_Alonso]

Thank you very much! That worked perfectly 🙂