public void outputHall(DataGridView dataGridHall) { dataGridHall.Rows.Clear(); try { var res = _hallService.SelectHall(); if (res.IsValid) { foreach (var c in res.ResultObject) { dataGridHall.Rows.Add(c.HallId, c.Numbers_of_rows, c.Number_of_seats_in_a_row); } } else { MessageBox.Show(errorDataBase); } } catch (Exception exp) { MessageBox.Show(errorController); } }