private void UpdateZoo_Clicked(object sender, RoutedEventArgs e)
        {
            ZooModel zooModel = new ZooModel();

            zooModel.Location = textZoo.Text;
            try
            {
                DbConnectionManager.UpdateZoo(listBoxZoo, zooModel);
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.ToString());
            }
            finally
            {
                if (listBoxZoo.SelectedItem != null)
                {
                    ShowZooList();
                    textZoo.Text = "";
                }
            }
        }