private void btnAddSubUnit_Click(object sender, RoutedEventArgs e)
        {
            if (lbBattalion.SelectedItem != null)
            {
                int     idFKSubUnit = (lbBattalion.SelectedItem as SubUnit).Id;
                SubUnit s           = addSubUnit.getNewSubUnit(-1, idFKSubUnit);
                if (s != null)
                {
                    if (sList == null)
                    {
                        sList = new SubUnitList();
                    }

                    int id = sqlWorker.getNewId("SubUnit");
                    s.Id = id;
                    if (sqlWorker.addSubUnit(id, s))
                    {
                        sList.values.Add(s);
                    }
                    else
                    {
                        MessageBox.Show("Ошибка при добавлении элемента");
                    }
                }
            }
        }