External |
Gets the ids of all elements which are external file references.
Namespace: Autodesk.Revit.DB
Assembly: RevitAPI (in RevitAPI.dll) Version: 25.0.0.0 (25.0.0.0)

Parameters
- aDoc Document
- A Revit Document.
Return Value
ICollection ElementIdThe ids of all elements which are external file references.

Exception | Condition |
---|---|
ArgumentNullException | A non-optional argument was null |

This function will not return the ids of nested Revit links; it only returns top-level references.
