public TabbedDialogAction OnCancelAction { get; set; }

Public Property OnCancelAction As TabbedDialogAction
	Get
	Set

public:
property TabbedDialogAction^ OnCancelAction {
	TabbedDialogAction^ get ();
	void set (TabbedDialogAction^ value);
}

This 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 nullNothingnullptra null reference (Nothing in Visual Basic).