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ExternalFileUtils.IsExternalFileReference

Public Class

Determines whether the given element represents an external file.

Namespace: Autodesk.Revit.DB

Assembly: RevitAPI (in RevitAPI.dll) Version: 25.0.0.0 (25.0.0.0)

Syntax

public static bool IsExternalFileReference(
  Document aDoc,
  ElementId elemId
)

Parameters

aDoc Document

A Revit Document.

elemId ElementId

The element to be checked for an external file reference.

Return Value

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

Exceptions

Exception

Condition

ArgumentException

The element elemId does not exist in the document

ArgumentNullException

A non-optional argument was null

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.