Question

我有一个模型，你可以在这里看到：

public partial class AssistanceJuror
{
    public int Id { get; set; }
    public System.DateTime Date { get; set; }
    public int UserId { get; set; }
    public int AssistanceId { get; set; }

    public virtual User User { get; set; }
    public virtual Assistance Assistance { get; set; }
}

我的控制器中有一个操作可以返回edit视图。

   @model DomainClass.AssistanceJuror

@{
    ViewBag.Title = "View1";
    Layout = "~/Views/Shared/_LayoutIdeaOtherPage.cshtml";
}

<h2>View1</h2>

@using (Html.BeginForm()) {
    @Html.ValidationSummary(true)

    <fieldset>
        <legend>AssistanceJuror</legend>

        @Html.HiddenFor(model => model.Id)


        <div class="editor-label">
            @Html.LabelFor(model => model.Date)
        </div>
        <div class="editor-field">
            @Html.EditorFor(model => model.Date)
            @Html.ValidationMessageFor(model => model.Date)
        </div>

        <div class="editor-label">
            @Html.LabelFor(model => model.UserId)
        </div>
        <div class="editor-field">
            @Html.EditorFor(model => model.UserId)
            @Html.ValidationMessageFor(model => model.UserId)
        </div>

        <div class="editor-label">
            @Html.LabelFor(model => model.AssistanceId)
        </div>
        <div class="editor-field">
            @Html.EditorFor(model => model.AssistanceId)
            @Html.ValidationMessageFor(model => model.AssistanceId)
        </div>

        <p>
            <input type="submit" value="Save" />
        </p>
    </fieldset>
}

<div>
    @Html.ActionLink("Back to List", "Index")
</div>

@section Scripts {
    @Scripts.Render("~/bundles/jqueryval")
}

我的编辑操作如下：

  public ActionResult EditExpert(int id)
    {
        ViewBag.listAssistance = new SelectList(objAssistanceRepository.ReturnAssitanceWithoutExpert(), "Id",
                                                "AssistanceName");
        AssistanceJuror t = new AssistanceJuror();

        if (objAssistanceJurorRepository.FindBy(i => i.UserId == id).Count() == 1)
        {
            t = objAssistanceJurorRepository.FindBy(i => i.UserId == id).First();
        }
        return View(t);
    }

我的帖子

    [HttpPost]
        [Authorize(Roles = "Admin,Expert")]
        public ActionResult EditExpert(AssistanceJuror assistanceJuror)
        {

        }

让我在edit操作中解释我的问题我使用AssistanceJuror将id=5返回到我的视图，但正如您可以看到我在AssistanceJuror.id中保留@Html.HiddenFor(model => model.Id) }，但点击提交按钮后，视图返回的ID将更改为4。

enter image description here 最好的问候

我改变了这个：

@Html.HiddenFor(model => model.Id)

到此：

<div class="editor-label">
        @Html.LabelFor(model => model.Id)
    </div>
    <div class="editor-field">
        @Html.EditorFor(model => model.Id)
        @Html.ValidationMessageFor(model => model.Id)
    </div>

文本框中显示的值为4，表示用户ID。

执行edit get maction后，我的html代码输入值如下：

<form action="/Assistance/EditExpert/4" method="post">    <fieldset>
        <legend>AssistanceJuror</legend>

        <input data-val="true" data-val-number="The field Id must be a number." data-val-required="The Id field is required." id="Id" name="Id" type="hidden" value="4" />


        <div class="editor-label">
            <label for="UserId">UserId</label>
        </div>
        <div class="editor-field">
            <input class="text-box single-line" data-val="true" data-val-number="The field UserId must be a number." data-val-required="The UserId field is required." id="UserId" name="UserId" type="number" value="4" />
            <span class="field-validation-valid" data-valmsg-for="UserId" data-valmsg-replace="true"></span>
        </div>
        <div class="editor-label">
            <label for="Date">Date</label>
        </div>
        <div class="editor-field">
            <input class="text-box single-line" data-val="true" data-val-date="The field Date must be a date." data-val-required="The Date field is required." id="Date" name="Date" type="datetime" value="8/28/2014 12:38:01 PM" />
            <span class="field-validation-valid" data-valmsg-for="Date" data-valmsg-replace="true"></span>
        </div>



        <div class="editor-label">
            <label for="AssistanceId">AssistanceId</label>
        </div>
        <div class="editor-field">
            <input class="text-box single-line" data-val="true" data-val-number="The field AssistanceId must be a number." data-val-required="The AssistanceId field is required." id="AssistanceId" name="AssistanceId" type="number" value="4" />
            <span class="field-validation-valid" data-valmsg-for="AssistanceId" data-valmsg-replace="true"></span>
        </div>

        <p>
            <input type="submit" value="Save" />
        </p>
    </fieldset>
</form>

Answer 1

我终于找到了问题。问题是参数的名称：

在get方法中，我可以看到一个id：

public ActionResult EditExpert(int id)
    {
        ViewBag.listAssistance = new SelectList(objAssistanceRepository.ReturnAssitanceWithoutExpert(), "Id",
                                                "AssistanceName");
        AssistanceJuror t = new AssistanceJuror();

        if (objAssistanceJurorRepository.FindBy(i => i.UserId == id).Count() == 1)
        {
            t = objAssistanceJurorRepository.FindBy(i => i.UserId == id).First();
        }
        return View(t);
    }

所以当id传递给这个动作时，mvc会尝试将这些值与你的模型匹配，这就是mvc试图把id放到模型id的问题，但实际上我得到的这个值是用户id之后将参数名称更改为userid已解决的问题：

public ActionResult EditExpert(int userid)
{
    ViewBag.listAssistance = new SelectList(objAssistanceRepository.ReturnAssitanceWithoutExpert(), "Id",
                                            "AssistanceName");
    AssistanceJuror t = new AssistanceJuror();

    if (objAssistanceJurorRepository.FindBy(i => i.UserId == userid).Count() == 1)
    {
        t = objAssistanceJurorRepository.FindBy(i => i.UserId == userid).First();
    }
    return View(t);
}

我在mvc中的视图为post post返回不同的值

1 个答案: