Question

我提交表单后，只显示＆＃34;＆＃34;价值消失了，谁能知道错误是什么？

在View中，我使用@ Html.textboxfor并使用ViewBag.StaffId值作为＆＃34; readonly＆＃34;变量，如果我提交带有错误的表单，则ViewBag.StaffId值会消失

<div class="form-group">
            @Html.LabelFor(model => model.StaffId, "StaffId", htmlAttributes: new { @class = "control-label col-md-2" })
            <div class="col-md-10">
               @Html.TextBoxFor(model => model.StaffId, new { @Value = ViewBag.StaffId, @readonly = "readonly", @class = "form-control" })
               @Html.ValidationMessageFor(model => model.StaffId, "", new { @class = "text-danger" })
            </div>
        </div>

        <div class="form-group">
            @Html.LabelFor(model => model.StaffInfo.Cname, htmlAttributes: new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                @Html.TextBoxFor(model => model.StaffInfo.Cname, new { @Value = ViewBag.CName, @readonly = "readonly", @class = "form-control" })
                @Html.ValidationMessageFor(model => model.StaffInfo.Cname, "", new { @class = "text-danger" })
            </div>
        </div>

        <div class="form-group">
            @Html.LabelFor(model => model.Tdate, htmlAttributes: new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                @Html.EditorFor(model => model.Tdate, new { htmlAttributes = new { @class = "form-control" } })
                @Html.ValidationMessageFor(model => model.Tdate, "", new { @class = "text-danger" })
            </div>
        </div>

        <div class="form-group">
            @Html.LabelFor(model => model.Edate, htmlAttributes: new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                @Html.EditorFor(model => model.Edate, new { htmlAttributes = new { @class = "form-control" } })
                @Html.ValidationMessageFor(model => model.Edate, "", new { @class = "text-danger" })
            </div>
        </div>

        <div class="form-group">
            @Html.LabelFor(model => model.StaffId, "StaffId", htmlAttributes: new { @class = "control-label col-md-2" })
            <div class="col-md-10">
               @Html.TextBoxFor(model => model.StaffId, new { @Value = ViewBag.StaffId, @readonly = "readonly", @class = "form-control" })
               @Html.ValidationMessageFor(model => model.StaffId, "", new { @class = "text-danger" })
            </div>
        </div>

控制器代码：

[HttpPost]
[ValidateAntiForgeryToken]
public ActionResult Create([Bind(Include = "StaffId, Tdate, Edate")] TrainingRecord trainingRecord)
{
    if (ModelState.IsValid)
    {
        db.TrainingRecordDBSet.Add(trainingRecord);
        db.SaveChanges();
        return RedirectToAction("Search", "TrainingRecords", new { id = trainingRecord.StaffId });
    } 
    return View(trainingRecord);
}

Answer 1

你发布后的大多数绑定模型例如

public ActionResult myController(){
  var model= new myModel();
  return View(model);
}

[HttpPost]
public ActionResult myController(myModel model){
  model.StaffId = 1;
  return View(model);
}

Answer 2

您没有发布控制器代码。无论如何尝试这个例子

[HttpPost]         
public ActionResult <Resultnamehere>(<YOUR MODEL CLASS HERE> model)
{

  return View(Model);
}

Answer 3

谢谢！在你的帮助之后我找到了答案！

    [HttpPost]
    [ValidateAntiForgeryToken]
    public ActionResult Create([Bind(Include = "StaffId, Tdate, Edate, Place, Organizer, Tname, Hour, Coefficient, Type, Certificate, CamMoney, CertPath, Year")] TrainingRecord trainingRecord)
    {
        if (ModelState.IsValid)
        {
            db.TrainingRecordDBSet.Add(trainingRecord);
            db.SaveChanges();
            return RedirectToAction("Search", "TrainingRecords", new { id = trainingRecord.StaffId });
        }
        ViewBag.StaffId = trainingRecord.StaffId;
        return View(trainingRecord);
    }

提交表单后，价值就会消失

3 个答案: