private void Button2_Click(object sender, RoutedEventArgs e)
 {
     if (!(aView.CurrentPosition == myNames.Count - 1))
     {
         aView.MoveCurrentToNext();
     }
 }
 private void btnNext_Click(object sender, RoutedEventArgs e)
 {
     System.ComponentModel.ICollectionView navigationView = CollectionViewSource.GetDefaultView(phoneNumbersDataSet.PhoneNumbers);
     navigationView.MoveCurrentToNext();
 }