Share Email Facebook Twitter LinkedIn TabbedDialogExtension.OnCancelAction Property The cancel handler.Namespace: Autodesk.Revit.UIAssembly: RevitAPIUI (in RevitAPIUI.dll) Version: 25.3.0.0 (25.3.0.0) Syntax C# public TabbedDialogAction OnCancelAction { get; set; }Property ValueTabbedDialogAction RemarksThis handler will be invoked when the "Cancel" button in Revit options dialog is clicked. The Revit options dialog will be closed directly if this property was set to null. See AlsoReferenceTabbedDialogExtension ClassAutodesk.Revit.UI Namespace