Loading method

LoadingWindow.cs

        public LoadingWindow()
        {
            InitializeComponent();

            DataContext = this;

            Loaded += LoadingWindow_Loaded;
        }
        
        void LoadingWindow_Loaded(object sender, RoutedEventArgs e)
        {
            //Task.Factory.StartNew(() =>
            //{
                LoadViewModels();
            //});
        }
        
          private void LoadViewModels()
        {
            Globals.MainWindowVm = new MainWindowVm();

            using (var dbContext = new MyDbContext())
            {
                LoadItems<Type, TypeVm>("Type", dbContext.Types);
                LoadSecondaryItems<SecondaryItem, SecondaryItemVm>("SecondaryType", dbContext.SecondaryTypes)
            }

            App.Current.Dispatcher.Invoke(() =>
            {
                Globals.MainWindow = new MainWindow();
                Globals.MainWindow.Show();
            });
        }