public bool UpdateBillCorrection(VmBillCorrection billCorrection)
        {
            billCorrection.Reason = "Modification le : " + DateTime.Now.ToString() + "\n\rRaison : " + billCorrection.Reason + "\n\r\n\r";
            ProducerBill bill = _context.ProducerBills.Include(x => x.BillEntries).Include(x => x.AdherentStolon).First(x => x.BillId == billCorrection.ProducerBillId);

            bill.ModificationReason = billCorrection.Reason;
            bill.HasBeenModified    = true;
            List <Guid?> modifiedBills = new List <Guid?>();

            foreach (var billQuantity in billCorrection.NewQuantities)
            {
                var billEntry = bill.BillEntries.First(x => x.Id == billQuantity.BillId);
                billEntry.Quantity        = billQuantity.Quantity;
                billEntry.HasBeenModified = true;
                if (!modifiedBills.Any(x => x == billEntry.ConsumerBillId))
                {
                    modifiedBills.Add(billEntry.ConsumerBillId);
                }
            }
            _context.SaveChanges();
            bill = _context.ProducerBills.Include(x => x.BillEntries).Include(x => x.AdherentStolon).Include(x => x.AdherentStolon.Stolon).Include(x => x.AdherentStolon.Adherent).First(x => x.BillId == billCorrection.ProducerBillId);
            bill.BillEntries.ForEach(x => x.ProductStock = _context.ProductsStocks.Include(y => y.Product).First(stock => stock.Id == x.ProductStockId));
            bill.HtmlBillContent = BillGenerator.GenerateHtmlBillContent(bill, _context);
            BillGenerator.GenerateBillPDF(bill);
            foreach (var billId in modifiedBills)
            {
                var billToModify = _context.ConsumerBills.Include(x => x.AdherentStolon.Adherent).First(x => x.BillId == billId);
                billToModify.ModificationReason += billCorrection.Reason;
                billToModify.HasBeenModified     = true;
                //Envoie mail user
                BillGenerator.GenerateBillPDF(billToModify);
                AuthMessageSender.SendEmail(billToModify.AdherentStolon.Stolon.Label,
                                            billToModify.AdherentStolon.Adherent.Email,
                                            billToModify.AdherentStolon.Adherent.CompanyName,
                                            "Votre bon de commande de la semaine chez " + billToModify.AdherentStolon.Stolon.Label + "a été modifié (Bon de commande " + bill.BillNumber + ")",
                                            "Oops, petit problème, malheureusement tout vos produits ne pourront pas être disponible. Votre commande a été modifié. En voici la raison : " + billCorrection.Reason + "\n\n" + bill.HtmlBillContent);
            }
            _context.SaveChanges();
            return(true);
        }