Namespace: Autodesk.Revit.DB Class: ExternalFileUtils

ExternalFileUtils.IsExternalFileReference

Method

Description:
Determines whether the given element represents an external file.

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.

Syntax

public static bool IsExternalFileReference(
	Document aDoc,
	ElementId elemId
)

Public Shared Function IsExternalFileReference ( 
	aDoc As Document,
	elemId As ElementId
) As Boolean

public:
static bool IsExternalFileReference(
	Document^ aDoc, 
	ElementId^ elemId
)

static member IsExternalFileReference : 
        aDoc : Document * 
        elemId : ElementId -> bool

Parameters

Parameter	Type	Description
aDoc	Document	A Revit Document.
elemId	ElementId	The element to be checked for an external file reference.

Return Value

Type	Description
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