Determines whether the given element represents an external file.

Namespace: Autodesk.Revit.DB
Assembly: RevitAPI (in RevitAPI.dll) Version: 21.0.0.0 (21.1.1.109)
Since:  2012

Syntax

C#
public static bool IsExternalFileReference(
	Document aDoc,
	ElementId elemId
)
Visual Basic
Public Shared Function IsExternalFileReference ( _
	aDoc As Document, _
	elemId As ElementId _
) As Boolean
Visual C++
public:
static bool IsExternalFileReference(
	Document^ aDoc, 
	ElementId^ elemId
)

Parameters

aDoc
Type: Autodesk.Revit.DB..::..Document
A Revit Document.
elemId
Type: Autodesk.Revit.DB..::..ElementId
The element to be checked for an external file reference.

Return Value

True if the given element represents an external file; false otherwise.

Remarks

CAD imports are not external file references, as their data is brought fully into Revit. No connection is maintained to the original file.

A link may be an external resource without being an external file.

Exceptions

ExceptionCondition
Autodesk.Revit.Exceptions..::..ArgumentException The element elemId does not exist in the document
Autodesk.Revit.Exceptions..::..ArgumentNullException A non-optional argument was NULL

See Also