Reference.LinkedElementId

Description:
The id of the top-level element in the linked document that is referred to by this reference.

Remarks:
InvalidElementId will be returned for references that don't refer to an element in a linked RVT file.

public ElementId LinkedElementId { get; }

Public ReadOnly Property LinkedElementId As ElementId
Get

public:
property ElementId^ LinkedElementId {
	ElementId^ get ();
}