Share Email Facebook Twitter LinkedIn ExternalDataInstanceAddedIntoDocumentEventArgs.ItemId Property The id of the external data item to which a new reference has been added. Namespace: Autodesk.Revit.DB.EventsAssembly: RevitAPI (in RevitAPI.dll) Version: 25.3.0.0 (25.3.0.0) Syntax C# public string ItemId { get; }Property ValueString See AlsoReferenceExternalDataInstanceAddedIntoDocumentEventArgs ClassAutodesk.Revit.DB.Events Namespace