private void Window_Loaded(object sender, RoutedEventArgs e)
        {

            MyApp.myDataSet myDataSet = ((MyApp.myDataSet)(this.FindResource("myDataSet")));
            // Carica i dati nella tabella categorie. Se necessario, è possibile modificare questo codice.
            MyApp.myDataSetTableAdapters.categorieTableAdapter myDataSetcategorieTableAdapter = new MyApp.myDataSetTableAdapters.categorieTableAdapter();
            myDataSetcategorieTableAdapter.FillByPadre(myDataSet.categorie);
            System.Windows.Data.CollectionViewSource categorieViewSource = ((System.Windows.Data.CollectionViewSource)(this.FindResource("categorieViewSource")));
            categorieViewSource.View.MoveCurrentToFirst();

        }