Question

我的主页索引显示了大量数据，还包括提交表单。表单效果很好......除了......验证错误始终存在。

当用户成功提交表单并传递ModelState.IsValid方法时，我将它们重定向回Index（入口点）操作方法。此时我希望不显示所有验证。他们刚刚提交了为什么显示错误？请参阅下面的代码（突出显示的部分显示了我当前尝试删除验证。

当用户第一次进入屏幕时，没有验证消息（好），但在第一次提交后，它们永远不会再消失。

一旦重定向到Index（），如何才能停止验证？谢谢。编辑：

public ActionResult Index()
    {
        var model = new PublicationModel(PublicationRepository.Instance.GetAllPublications().OrderBy(p => p.pname).ToList());

        return View(model);
    }

    [HttpPost]
    public ActionResult Index(PublicationSubmitItem model)
    {
        if (ModelState.IsValid)
        {
            //Send an email
            return RedirectToAction("Index");
        }

        var parentModel = new PublicationModel(PublicationRepository.Instance.GetAllPublications().OrderBy(p => p.pname).ToList());
        parentModel.SubmitItem = model;

        return View(parentModel);
    }

＆＃13;

<section id="pubform">
    @using (Html.BeginForm())
    {
        @Html.AntiForgeryToken()

    <div class="form-horizontal">
        <fieldset>
            <legend></legend>

            @Html.ValidationSummary(true, "", new { @class = "text-danger" })
            @*@Html.HiddenFor(model => Model.Id)*@

            <div class="form-group">
                @Html.LabelFor(model => model.SelectedPublications, htmlAttributes: new { @class = "control-label col-md-2" })
                <div class="col-md-10">
                    @Html.TextAreaFor(model => model.SelectedPublications, new { @class = "form-control", @readonly = "readonly" })
                    @Html.ValidationMessageFor(model => model.SelectedPublications, "You must pick at least 1 publication.", new { @class = "text-danger" })
                </div>
            </div>

            <div class="form-group">
                @Html.LabelFor(model => model.Name, htmlAttributes: new { @class = "control-label col-md-2" })
                <div class="col-md-10">
                    @Html.EditorFor(model => model.Name, new { htmlAttributes = new { @class = "form-control medium-control" } })
                    @Html.ValidationMessageFor(model => model.Name, "A name is required.", new { @class = "text-danger" })
                </div>
            </div>

            <div class="form-group">
                @Html.LabelFor(model => model.Email, htmlAttributes: new { @class = "control-label col-md-2" })
                <div class="col-md-10">
                    @Html.EditorFor(model => model.Email, new { htmlAttributes = new { @class = "form-control medium-control" } })
                    @Html.ValidationMessageFor(model => model.Email, "An email address is required.", new { @class = "text-danger" })
                </div>
            </div>

            <div class="form-group">
                @Html.LabelFor(model => model.RoomNumber, htmlAttributes: new { @class = "control-label col-md-2" })
                <div class="col-md-10">
                    @Html.EditorFor(model => model.RoomNumber, new { htmlAttributes = new { @class = "form-control short-control" } })
                    @Html.ValidationMessageFor(model => model.RoomNumber, "", new { @class = "text-danger" })
                </div>
            </div>

            <div class="form-group">
                @Html.LabelFor(model => model.LocationId, htmlAttributes: new { @class = "control-label col-md-2" })
                <div class="col-md-10">
                    @Html.DropDownListFor(model => model.LocationId, new SelectList(Model.Locations, "Id", "Name"))
                    @Html.ValidationMessageFor(model => model.LocationId, "", new { @class = "text-danger" })
                </div>
            </div>

            <div class="form-group">
                @Html.LabelFor(model => model.Extension, htmlAttributes: new { @class = "control-label col-md-2" })
                <div class="col-md-10">
                    @Html.EditorFor(model => model.Extension, new { htmlAttributes = new { @class = "form-control short-control" } })
                    @Html.ValidationMessageFor(model => model.Extension, "", new { @class = "text-danger" })
                </div>
            </div>

            <div class="form-group">
                @Html.LabelFor(model => model.Comments, htmlAttributes: new { @class = "control-label col-md-2" })
                <div class="col-md-10">
                    @Html.TextAreaFor(model => model.Comments, new { htmlAttributes = new { @class = "form-control" } })
                    @Html.ValidationMessageFor(model => model.Comments, "", new { @class = "text-danger" })
                </div>
            </div>

            <div class="form-group">
                <div class="col-md-offset-9 col-md-10">
                    <input type="submit" value="Send" class="btn btn-default" style="background-color: #DAEAF5;" />
                    <input type="button" value="Clear" class="btn btn-default" style="background-color: #DAEAF5;" id="clearButton" />
                </div>
            </div>
        </fieldset>
    </div>
        
    }
</section>

＆＃13;

表单始终显示验证错误。

@ataravati - 我重定向到索引，因为我想重新显示他们刚才所在的页面。表单将重置，数据将相同 - 这是想要的行为。该表单实际上发送了一封电子邮件，它不应该将它们重定向到其他页面。

EDIT2 - 我发现如果删除自定义错误消息，表单将按预期工作。现在弄清楚为什么/如何解决它。

Answer 1

使用ValidationMessageFor()的第二个参数指定要显示的错误。相反，使用

@Html.ValidationMessageFor(m => m.Name, null, new { @class = "text-danger" })

并使用属性上的数据注释设置错误消息文本

[Required(ErrorMessage = "A name is required.")]
public string Name { get; set; }

MVC重置ModelState，因此错误消息不会显示

1 个答案: