|  Export  | 
 Retrieves the GUID representing the subelement in DWF and IFC export. 
 Namespace: Autodesk.Revit.DB
Assembly: RevitAPI (in RevitAPI.dll) Version: 25.0.0.0 (25.0.0.0)
 Syntax
 Syntax  Parameters
- subelement Subelement
- The subelement.
Return Value
GuidThe value of the GUID representing the subelement in the export context.
 Exceptions
 Exceptions  | Exception | Condition | 
|---|---|
| ArgumentNullException | A non-optional argument was null | 
 Remarks
 Remarks   This id is used in the contents of DWF export and IFC export and it should be used only when cross-referencing to the contents of these export formats. When storing Ids that will need to be mapped back to subelements in future sessions,  UniqueId  must be used. 
  See Also
 See Also