RevitLinkTypeCreateFromIFC(Document, ExternalResourceReference, String, Boolean, RevitLinkOptions) Method

Creates a new Revit link type from an existing Revit file created via import by reference of an asscoiated IFC file.

Namespace: Autodesk.Revit.DB
Assembly: RevitAPI (in RevitAPI.dll) Version: 25.0.0.0 (25.0.0.0)
Syntax
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public static LinkLoadResult CreateFromIFC(
	Document document,
	ExternalResourceReference resourceReference,
	string revitLinkedFilePath,
	bool recreateLink,
	RevitLinkOptions options
)

Parameters

document  Document
The document in which to create the Revit link.
resourceReference  ExternalResourceReference
An external resource reference describing the source of the IFC file used in creation.
revitLinkedFilePath  String
The path of the existing Revit file that contains elements created via an import by reference operation. This must be a full path.
recreateLink  Boolean
If true, the existing Revit file created via an import by reference operation will be updated based on the information in the IFC file. If false, the existing Revit file will be used as-is.
options  RevitLinkOptions
An options class for loading Revit links.

Return Value

LinkLoadResult
An object containing the results of creating and loading the Revit link type. It contains the ElementId of the new link.
Exceptions
ExceptionCondition
ArgumentException document is not a project document. -or- document already contains a linked model at path revitLinkedFilePath. -or- The server referenced by the ExternalResourceReference does not exist or does not implement IExternalResourceServer. -or- The server referenced by the ExternalResourceReference cannot support IFC links. -or- The ExternalResourceReference (resourceReference) is not in a format that is supported by its server.
ArgumentNullException A non-optional argument was null
FileAccessException The model cannot be accessed due to lack of access privileges.
FileArgumentNotFoundException There is not a valid Revit file at revitLinkedFilePath's location
InvalidOperationException The file is not allowed to access. -or- Revit cannot customize worksets for this model.
ModificationForbiddenException The document is in failure mode: an operation has failed, and Revit requires the user to either cancel the operation or fix the problem (usually by deleting certain elements). -or- The document is being loaded, or is in the midst of another sensitive process.
ModificationOutsideTransactionException The document has no open transaction.
Remarks

This function is one of a series of steps necessary for linking an IFC file. To understand how it is used in context, please download the IFC open source code, and look in the Revit.IFC.Import project at Importer.ImportIFC(ImporterIFC importer), under the IFCImportAction.Link branch.

This function regenerates the input document. While the options argument allows specification of a path type, the input path argument must be a full path. Relative vs. absolute determines how Revit will store the path, but it needs a complete path to find the linked document initially.
See Also