Share Email Facebook Twitter LinkedIn TaskDialog.DefaultButton Property The default button for the dialog. Namespace: Autodesk.Revit.UIAssembly: RevitAPIUI (in RevitAPIUI.dll) Version: 26.4.0.0 (26.4.0.0) Syntax C# public TaskDialogResult DefaultButton { get; set; }Property ValueTaskDialogResult Remarks If DefaultButton is TaskDialogResult.None or its value does not correspond to any CommonButton or CommandLink in the dialog, then the first button in the dialog will be the default. See AlsoReferenceTaskDialog ClassAutodesk.Revit.UI Namespace