Revit 2025.3 API
RevisionCombine |
Combines the specified Revision with the previous Revision.
Namespace: Autodesk.Revit.DB
Assembly: RevitAPI (in RevitAPI.dll) Version: 25.3.0.0 (25.3.0.0)
Syntax
public static ISet<ElementId> CombineWithPrevious( Document document, ElementId revisionId )
Public Shared Function CombineWithPrevious ( document As Document, revisionId As ElementId ) As ISet(Of ElementId)
public: static ISet<ElementId^>^ CombineWithPrevious( Document^ document, ElementId^ revisionId )
static member CombineWithPrevious : document : Document * revisionId : ElementId -> ISet<ElementId>
Parameters
- document Document
- The Document containing the Revisions.
- revisionId ElementId
- The Revision that should have its clouds and tags associated with the previous Revision.
Return Value
ISetElementIdThe ids of all RevisionClouds that were reassigned to the previous Revision.

Exception | Condition |
---|---|
ArgumentException | revisionId is not a valid Revision. -or- This operation cannot be performed because revisionId is an issued Revision. -or- revisionId cannot be combined with the previous Revision because either revisionId is the first Revision or the previous Revision has already been issued. |
ArgumentNullException | A non-optional argument was null |

All RevisionClouds and tags associated with the specified Revision will be reassigned
to the previous Revision in the model and the specified Revision will be deleted from
the model. The operation can only be performed if both the specified Revision and the
previous one are unissued.
See Also