Share Email Facebook Twitter LinkedIn DocumentDifference.GetModifiedElementIds Method Modified element id collection. Namespace: Autodesk.Revit.DBAssembly: RevitAPI (in RevitAPI.dll) Version: 25.3.0.0 (25.3.0.0) Syntax C# public ISet<ElementId> GetModifiedElementIds()Return ValueISet<ElementId> See AlsoReferenceDocumentDifference ClassAutodesk.Revit.DB Namespace