private void QuestionnaireRibbon_Load(object sender, RibbonUIEventArgs e)
        {
            RefreshSetAndAdd();

            AppWapper.App.SlideSelectionChanged += App_SlideSelectionChanged;
            AppWapper.App.SlideShowNextSlide += App_SlideShowNextSlide;
            AppWapper.App.PresentationOpen += App_PresentationOpen;


            _loginWindow = new LoginWindow();
            _loginWindow.Closed += LoginWindowClosed;
        }
 private void LoginWindowClosed(object sender, EventArgs e)
 {
     _loginWindow = new LoginWindow();
     _loginWindow.Closed += LoginWindowClosed;
 }