public int GetCityIdByUserId(int car_id) { OrderQuery orderQuery = new OrderQuery(language); System.Data.DataTable dataTable = conn_db.ReadTable(orderQuery.GetOrderIdByUserId(car_id)); if (dataTable.Rows.Count == 0) { throw new EmptyViewException(language); } return(Convert.ToInt32(dataTable.Rows[0]["id"].ToString())); }