void addPeriodico_Click(object sender, RoutedEventArgs e)
{
//PeriodicoWindow cp = new PeriodicoWindow();
MagazineWindow mw = new MagazineWindow();
mw.Show();
}
void btnInserto_Click(object sender, RoutedEventArgs e)
{
MagazineWindow window = new MagazineWindow();
window.Show();
}