API Reference > iModeljs-backend > Models > Model > onDeleteElement onDeleteElement MethodProtectedStatic Called when an Element in an instance of a Model of this class is about to be deleted. onDeleteElement(_arg: OnElementInModelIdArg): void note throw an exception to disallow the delete note If you override this method, you must call super. note this is the class of the Model holding the element Parameter Type Description _arg OnElementInModelIdArg Returns - void Defined in core/backend/src/Model.ts Line 238 Last Updated: 29 November, 2022