我有一個下拉列表，顯示數(shù)據(jù)庫中 db.Budgets 的代碼和 BudgetCodename。視圖片段如下所示： @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">−</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>}控制器看起來像這樣： 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");}下拉菜單看起來不錯，并顯示代碼和預(yù)算代碼名稱。但是該框不會將數(shù)據(jù)回發(fā)到 sql 數(shù)據(jù)庫。不會產(chǎn)生任何錯誤。我做錯了什么？
3 回答
繁星淼淼
TA貢獻1775條經(jīng)驗 獲得超11個贊
您需要將要發(fā)布的數(shù)據(jù)包裝到表單中：
@using (Html.BeginForm("Search", "YOUR CONTROLLER", FormMethod.Post)) {
<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>
}
您的 POST 操作需要接受您發(fā)布的模型：
public ActionResult Post(MyModel model)
{
//call a service to save info to database
}
臨摹微笑
TA貢獻1982條經(jīng)驗 獲得超2個贊
我發(fā)現(xiàn)從控制器中刪除異步確實會將整數(shù)回發(fā)到表中。
[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);
}
桃花長相依
TA貢獻1860條經(jīng)驗 獲得超8個贊
在你的代碼中。您在操作方法中發(fā)送的數(shù)據(jù)屬于 POST 類型。
[HttpPost]
[ValidateAntiForgeryToken] 公共異步任務(wù)創(chuàng)建（）
您必須在視圖頁面中定義“FormMethod”。例如：
@using (Html.BeginForm("ActionMethod 名稱", "控制器名稱", FormMethod.Post)) {
} ` 我希望這對我有幫助。
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