public override bool UpdateData(int id, ref DTO.ShowroomReceiptMng.ShowroomReceipt dtoItem, out Library.DTO.Notification notification)
        {
            notification = new Library.DTO.Notification()
            {
                Type = Library.DTO.NotificationType.Success
            };
            try
            {
                using (ShowroomReceiptMngEntities context = CreateContext())
                {
                    ShowroomReceipt dbItem = null;
                    if (id == 0)
                    {
                        dbItem = new ShowroomReceipt();
                        context.ShowroomReceipt.Add(dbItem);
                    }
                    else
                    {
                        dbItem = context.ShowroomReceipt.FirstOrDefault(o => o.ShowroomReceiptID == id);
                    }

                    if (dbItem == null)
                    {
                        notification.Message = "data not found!";
                        return(false);
                    }
                    else
                    {
                        // check concurrency
                        //if (dbItem.ConcurrencyFlag != null && !dbItem.ConcurrencyFlag.SequenceEqual(Convert.FromBase64String(dtoItem.ConcurrencyFlag_String)))
                        //{
                        //    throw new Exception(DALBase.Helper.TEXT_CONCURRENCY_CONFLICT);
                        //}

                        if (dtoItem.ReceiptTypeID == 2) // 2: EXPORT
                        {
                            DAL.Support.DataFactory support_factory = new Support.DataFactory();
                            Hashtable support_filters = new Hashtable();
                            foreach (var item in dtoItem.ShowroomReceiptDetails)
                            {
                                if (item.ShowroomReceiptDetailID > 0)
                                {
                                    foreach (var area in item.ShowroomReceiptAreaDetails)
                                    {
                                        if (area.ShowroomReceiptAreaDetailID > 0)
                                        {
                                            var physicalByArea = support_factory.QuickSearchShowroomAreaByPhysicalQnt(support_filters, out notification).Where(o => o.ShowroomItemID == item.ShowroomItemID && o.ShowroomAreaID == area.ShowroomAreaID).FirstOrDefault();
                                            var currentArea    = context.ShowroomReceiptAreaDetail.Where(o => o.ShowroomReceiptAreaDetailID == area.ShowroomReceiptAreaDetailID).FirstOrDefault();
                                            if (physicalByArea == null)
                                            {
                                                throw new Exception("Could not find this product in area. You should select another area");
                                            }
                                            else if (area.Quantity - currentArea.Quantity > physicalByArea.Quantity)
                                            {
                                                throw new Exception("Quantity must be less than current physical quantity");
                                            }
                                        }
                                        else
                                        {
                                            var physicalByArea = support_factory.QuickSearchShowroomAreaByPhysicalQnt(support_filters, out notification).Where(o => o.ShowroomItemID == item.ShowroomItemID && o.ShowroomAreaID == area.ShowroomAreaID).FirstOrDefault();
                                            if (physicalByArea == null)
                                            {
                                                throw new Exception("Could not find this product in area. You should select another area");
                                            }
                                            else if (area.Quantity > physicalByArea.Quantity)
                                            {
                                                throw new Exception("Quantity must be less than current physical quantity");
                                            }
                                        }
                                    }
                                }
                                else
                                {
                                    foreach (var area in item.ShowroomReceiptAreaDetails)
                                    {
                                        var physicalByArea = support_factory.QuickSearchShowroomAreaByPhysicalQnt(support_filters, out notification).Where(o => o.ShowroomItemID == item.ShowroomItemID && o.ShowroomAreaID == area.ShowroomAreaID).FirstOrDefault();
                                        if (physicalByArea == null)
                                        {
                                            throw new Exception("Could not find this product in area. You should select another area");
                                        }
                                        else if (area.Quantity > physicalByArea.Quantity)
                                        {
                                            throw new Exception("Quantity must be less than current physical quantity");
                                        }
                                    }
                                }
                            }
                        }

                        //convert dto to db
                        converter.DTO2DB_ShowroomReceipt(dtoItem, ref dbItem);
                        //reove orphan
                        context.ShowroomReceiptAreaDetail.Local.Where(o => o.ShowroomReceiptDetail == null).ToList().ForEach(o => context.ShowroomReceiptAreaDetail.Remove(o));
                        context.ShowroomReceiptDetail.Local.Where(o => o.ShowroomReceipt == null).ToList().ForEach(o => context.ShowroomReceiptDetail.Remove(o));
                        //save data
                        context.SaveChanges();
                        //update receipt no
                        context.ShowroomReceiptMng_function_GenerateReceipNo(dbItem.ShowroomReceiptID, dbItem.Season, dbItem.ReceiptTypeID);
                        //get return data
                        dtoItem = GetData(dbItem.ShowroomReceiptID, out notification).Data;
                        return(true);
                    }
                }
            }
            catch (Exception ex)
            {
                notification.Type    = Library.DTO.NotificationType.Error;
                notification.Message = ex.Message;
                notification.DetailMessage.Add(ex.Message);
                if (ex.GetBaseException() != null)
                {
                    notification.DetailMessage.Add(ex.GetBaseException().Message);
                }
                return(false);
            }
        }