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Namespace: Autodesk.Revit.UI Class: UIDocument

UIDocument.SaveAs(UISaveAsOptions)

Method
Description:
Saves the document to a file name obtained from the Revit user optionally prompting the user to overwrite file if it exists.
Remarks:

This method may not be called unless all transactions, sub-transactions, and transaction groups that were opened by the API code were closed.

That also implies that this method cannot be called during dynamic updates.
Syntax
public void SaveAs(
	UISaveAsOptions options
)
Parameters
Parameter Type Description
options UISaveAsOptions UI options for the SaveAs operation.
Return Value
Exceptions
Exception Condition
ArgumentNullException A non-optional argument was null
ForbiddenForDynamicUpdateException SaveAs may not be called during dynamic update.
InvalidOperationException Is not a primary document, it is a linked document. -or- SaveAs is temporarily disabled. -or- Thrown if there are any transactions, sub-transactions or transaction groups which were opened by the API code, and not closed. All of these items must be handled before attempting to save the document.
OperationCanceledException Thrown if saving is cancelled by an external application during 'DocumentSavingAs' event.