public void Clearall()
{
textBoxModell.Clear();
textBoxAdress.Clear();
textBoxTelephoneNumber.Clear();
textBoxFirstName.Clear();
textBoxLastName.Clear();
textBoxPrice.Clear();
textBoxStatus.Clear();
textBoxEmailAdress.Clear();
Foto.Clear();
gridControl1.DataSource = Foto;
gridControl1.Refresh();
}