Asp.net MVC plusieurs champs dans la liste déroulante ne parviennent pas à publier dans la base de données

J'ai une liste déroulante qui montre le Code & BudgetCodename de db.Budgets de la base de données.

L'extrait de vue ressemble à ceci:

[HttpPost]
        [ValidateAntiForgeryToken]
        public ActionResult Create([Bind(Include = "ClinicalAssetID,AssetTypeID,ProductID,ManufacturerID,ModelID,SupplierID,SerialNo,PurchaseDate,PoNo,Costing,TeamID,StaffID,WarrantyEndDate,InspectionDate,InspectionOutcome,InspectionDocumnets,InspectionDueDate, BudgetCodeID")] ClinicalAsset clinicalAsset)
        {
            if (ModelState.IsValid)
            {
                db.ClinicalAssets.Add(clinicalAsset);
                db.SaveChanges();
                return RedirectToAction("Index");
            }
            ViewBag.AssetTypeID = new SelectList(db.AssetTypes, "AssetTypeID", "AssetTypeName", clinicalAsset.AssetTypeID);
            ViewBag.ProductID = new SelectList(db.Products, "ProductID", "ProductName", clinicalAsset.ProductID);
            ViewBag.ModelID = new SelectList(db.Models, "ModelID", "ModelName", clinicalAsset.ModelID);
            ViewBag.ManufacturerID = new SelectList(db.Manufacturers, "ManufacturerID", "ManufacturerName", clinicalAsset.ManufacturerID);
            ViewBag.SupplierID = new SelectList(db.Suppliers, "SupplierID", "SupplierName", clinicalAsset.SupplierID);
            ViewBag.TeamID = new SelectList(db.Teams, "TeamID", "TeamName", clinicalAsset.TeamID);
            ViewBag.StaffID = new SelectList(db.Staffs, "StaffID", "StaffName", clinicalAsset.StaffID);
            ViewBag.InspectionOutcomeID = new SelectList(db.InspectionOutcomes, "InspectionOutcomeID", "InspectionOutcomeResult", clinicalAsset.InspectionOutcomeID);
            var Budgets = (from m in db.BudgetCodes
                           select new SelectListItem
                           {
                               Text = m.Code + " | " + m.BudgetCodeName,
                               Value = m.BudgetCodeID.ToString()
                           });
            ViewBag.BudgetsList = new SelectList(Budgets, "Value", "Text");
            return View(clinicalAsset);
        }

``````

et le contrôleur ressemble à ceci:

 [HttpPost]
 [ValidateAntiForgeryToken]
   public async Task<ActionResult> Create([Bind(Include = "ClinicalAssetID,AssetTypeID,ProductID,ManufacturerID,ModelID,SupplierID,SerialNo,PurchaseDate,PoNo,Costing,TeamID,StaffID,WarrantyEndDate,InspectionDate,InspectionOutcome,InspectionDocumnets,InspectionDueDate,BudgetCodeID")] ClinicalAsset clinicalAsset)
        {
            if (ModelState.IsValid)
            {
                db.ClinicalAssets.Add(clinicalAsset);
                await db.SaveChangesAsync();
                return RedirectToAction("Index");
            }
            ViewBag.AssetTypeID = new SelectList(db.AssetTypes, "AssetTypeID", "AssetTypeName", clinicalAsset.AssetTypeID);
            ViewBag.ProductID = new SelectList(db.Products, "ProductID", "ProductName", clinicalAsset.ProductID);
            ViewBag.ModelID = new SelectList(db.Models, "ModelID", "ModelName", clinicalAsset.ModelID);
            ViewBag.ManufacturerID = new SelectList(db.Manufacturers, "ManufacturerID", "ManufacturerName", clinicalAsset.ManufacturerID);
            ViewBag.SupplierID = new SelectList(db.Suppliers, "SupplierID", "SupplierName", clinicalAsset.SupplierID);
            ViewBag.TeamID = new SelectList(db.Teams, "TeamID", "TeamName", clinicalAsset.TeamID);
            ViewBag.StaffID = new SelectList(db.Staffs, "StaffID", "StaffName", clinicalAsset.StaffID);
            ViewBag.InspectionOutcomeID = new SelectList(db.InspectionOutcomes, "InspectionOutcomeID", "InspectionOutcomeResult", clinicalAsset.InspectionOutcomeID);
            var Budgets = (from m in db.BudgetCodes
                           select new SelectListItem
                           {
                               Text = m.Code + " | " + m.BudgetCodeName,
                               Value = m.BudgetCodeID.ToString()
                           });
            ViewBag.BudgetsList = new SelectList(Budgets, "Value", "Text");
            return View(clinicalAsset);
        }

Le menu déroulant semble correct, et affiche à la fois le code et le budgetCodeName.

Mais la boîte ne renvoie pas les données à la base de données SQL. Aucune erreur n'est créée.

Qu'est-ce que j'aurais pu faire de mal?

**** Modifier ****

J'ai essayé de placer le texte du contrôleur comme tel, mais cela ne fonctionne pas:

 public ActionResult Create()
        {


            var Budgets = (from m in db.BudgetCodes
             select new SelectListItem {
              Text = m.Code + "| " + m.BudgetCodeName,
              Value = m.BudgetCodeID.ToString()
          });

        ViewBag.BudgetsList = new SelectList(Budgets, "Value", "Text");

}

**** Update ****

J'ai constaté que la suppression de l'async du contrôleur publie le nombre entier dans la table. Comment puis-je le faire fonctionner avec async? ou est-ce que cela vaut la peine d'abandonner complètement async si je ne m'attends pas à de lourdes charges ou à des problèmes de bande passante en raison d'une petite base d'utilisateurs?

 @using (Html.BeginForm())
    {
        @Html.AntiForgeryToken()


        <div class="col-md-6">
            <div class="panel panel-default">
                <div class="panel-heading">
                    <div class="panel-btns">
                        <a href="" class="minimize">&minus;</a>
                    </div>
                    <h4 class="panel-title">Block Styled Form</h4>
                    <p>This is an example of form with block styled label.</p>
                </div>
                @Html.ValidationSummary(true, "", new { @class = "text-danger" })
                <div class="panel-body">
                    <div class="row">
                        <div class="col-sm-6">
                            <div class="form-group">
                               @Html.LabelFor(model => model.BudgetCodeID, "BudgetCode:", new { @class = "control-label" })
                               @Html.DropDownListFor(m => m.BudgetCodeID, (SelectList)ViewBag.BudgetsList, new { @class = "form-control" })
                                @Html.ValidationMessageFor(model => model.BudgetCodeID, "", new { @class = "text-danger" })
                                   </div>

}