private void ClearFields()
 {
     TextBoxYear.Clear();
     TextBoxMonth.Clear();
     TextBoxDay.Clear();
     TextBoxFirstName.Clear();
     TextBoxSecondName.Clear();
     TextBoxLastName.Clear();
     TextBoxPasportNumber.Clear();
     TextBoxPasportSeries.Clear();
 }
 private void ClearFields()
 {
     TextBoxYear.Clear();
     TextBoxMonth.Clear();
     TextBoxDay.Clear();
     TextBoxFirstName.Clear();
     TextBoxSecondName.Clear();
     TextBoxLastName.Clear();
     TextBoxLocation.Clear();
     TextBoxPost.Clear();
 }