SidebarDiagnostics.Settings.CloseButton_Click C# (CSharp) Method

        private void CloseButton_Click(object sender, RoutedEventArgs e)
        {
            if (Model.IsChanged)
            {
                Sidebar _sidebar = App.Current.Sidebar;

                if (_sidebar != null)
                {
                    DataContext = Model = new SettingsModel(_sidebar);
                    return;
                }
            }

            Close();
        }