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IsExternalFileReference Method

Determines whether the given element represents an external file.

Namespace: Autodesk.Revit.DB
Assembly: RevitAPI (in RevitAPI.dll) Version: 2015.0.0.0 (2015.0.0.0)
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

Exception Condition
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