C# MVC Ajax 模式验证 - 500 内部服务器错误

Question

我不确定为什么这不起作用，我在项目的不同部分有完全相同的东西，我收到“POST”500（内部服务器错误）我只是想得到 @using (Ajax. BeginForm( Validation to work on a modal. 就像我说的，我有这个确切的东西在项目的不同部分工作并且它工作。我的模态成功填充但是当我点击提交按钮时我得到了上面的错误。在我看来我拥有的模态和控制

HtmlHelper.UnobtrusiveJavaScriptEnabled = true;

我的代码中有所有这些库。

这是脚本部分

<script src="/Scripts/jquery-3.3.1.js"></script>
<script src="/Scripts/jquery-ui-1.12.1.js"></script>
<script src="/Scripts/jquery.unobtrusive-ajax.js"></script>
<script src="/Scripts/jquery.validate.js"></script>
<script src="/Scripts/jquery.validate.unobtrusive.js"></script>
<script src="/Scripts/bootstrap.js"></script>
<script src="/Scripts/respond.js"></script>

@using (Ajax.BeginForm("PartNumberUpdate", "Parts", new AjaxOptions() { HttpMethod = "POST", UpdateTargetId = "PartNumControls", OnSuccess = "ajaxPartUpdate" }))
{
    <div class="modal" id="modalPNUpdate" tabindex="-1" role="dialog" aria-labelledby="lblPNUpdate" aria-hidden="true">
        <div class="modal-dialog" role="document">
            <div class="modal-content">
                <div class="modal-header">
                    <h3 class="modal-title">Part Number Details</h3>
                    <button type="button" class="close" data-dismiss="modal" aria-label="Close">
                        <span aria-hidden="true">&times;</span>
                    </button>
                </div>
                <div class="modal-body" id="PartNumControls">
                    @Html.Partial("PNControls")
                </div>
                <div class="modal-footer">
                    <button type="button" class="btn btn-danger" data-dismiss="modal">Close</button>
                    <input type="submit" class="btn btn-primary" value="Save" />
                </div>
            </div>
        </div>
    </div>
}

这是控制器代码

        [HttpPost]
        [ValidateAntiForgeryToken]
        [HandleError]
        public ActionResult PartNumberUpdate(FindPartModel model)
        {
            if (ModelState.IsValid)
            {
                var partNumber = context.PartNumbers.Where(x => x.PartNumber1 == model.PartVM.PartNumber).FirstOrDefault();
                partNumber.PartNumber1 = model.PartVM.PartNumber;

                /// UPDATE PartNumber Record
                context.Entry(partNumber).State = EntityState.Modified;
                context.SaveChanges();
                string returnStr = "refresh";
                ModelState.Clear();
                return Json(returnStr);
            }
            return PartialView("PNControls", model);
        }

        public ActionResult PNControls()
        {
            return View(new FindPartModel());
        } 

添加 - 这是部分视图“PNControls”

@model Messer_PartNumbers.Models.FindPartModel
@{ 
    HtmlHelper.UnobtrusiveJavaScriptEnabled = true;
}

@Html.AntiForgeryToken()

<span class="alert-danger">
    @Html.ValidationSummary(true, "", new { @class="text-danger" })
</span>

@Html.HiddenFor(x => x.PartVM.PartID)
@Html.HiddenFor(x => x.PartVM.PartGroup)
@Html.HiddenFor(x => x.PartVM.GlobalPart)
@Html.HiddenFor(x => x.PartVM.Released)

<div class="form-group">
    @Html.LabelFor(x =>x.PartVM.PartNumber, htmlAttributes: new { @class="control-label col-3" })
    <div class="col-9">
        @Html.TextBoxFor(x => x.PartVM.PartNumber, new { @class="form-control", @readonly="readonly" })
        @Html.ValidationMessageFor(x => x.PartVM.PartNumber, "", new { @class="text-danger" })
    </div>
</div>
<div class="form-group">
    @Html.LabelFor(x => x.PartVM.EnteredBy, htmlAttributes: new { @class = "control-label col-3" })
    <div class="col-9">
        @*@Html.TextBoxFor(x => x.PartVM.EnteredBy, new { @class="form-control" })*@
        @Html.DropDownListFor(x=>x.PartVM.EnteredBy, Model.PNEnteredByOptions, new { @class="form-control"})
        @Html.ValidationMessageFor(x => x.PartVM.EnteredBy, "", new { @class = "text-danger" })
    </div>
</div>
<div class="form-group">
    @Html.LabelFor(x => x.PartVM.DateEntered, htmlAttributes: new { @class = "control-label col-3" })
    <div class="col-9">
        @Html.TextBoxFor(x => x.PartVM.DateEntered, new { @class = "form-control", @readonly = "readonly" })
        @Html.ValidationMessageFor(x => x.PartVM.DateEntered, "", new { @class = "text-danger" })
    </div>
</div>
<div class="form-group">
    @Html.LabelFor(x => x.PartVM.MachineTypes, htmlAttributes: new { @class = "control-label col-3" })
    <small>Hold Ctrl to select multiples</small>
    <div class="col-9">
        @*@Html.TextBoxFor(x => x.PartVM.MachineTypes, new { @class = "form-control" })*@
        @Html.ListBoxFor(x => x.PartVM.MachineTypes, Model.PNMachineTypeOptions, new { @class = "form-control", @size = 5, @style = "overflow:scroll;" })
        @Html.ValidationMessageFor(x => x.PartVM.MachineTypes, "", new { @class = "text-danger" })
    </div>
</div>

<div class="form-group">
    @Html.LabelFor(x => x.PartVM.Description, htmlAttributes: new { @class="control-label col-3" })
    <div class="col-9">
        @Html.TextBoxFor(x => x.PartVM.Description, new { @class="form-control" })
        @Html.ValidationMessageFor(x => x.PartVM.Description, "", new { @class="text-danger" })
    </div>
</div>

Answer 1

我发现了我的错误。

这是对我的模型的自定义验证。 正在使用其他模型。

谢谢@！ 我最终通过使用网络选项卡并在“全部”中查看堆栈跟踪找出更详细的错误来解决这个问题。 这篇文章让我有了在开发人员工具网络选项卡中使用堆栈跟踪的想法。 ASP.NET MVC 中的 500 内部服务器错误

Answer 2

    [HttpPost]
    [ValidateAntiForgeryToken]
    [HandleError]
    public ActionResult PartNumberUpdate(FindPartModel model){/*skip*/}

您在操作之上添加了[ValidateAntiForgeryToken] 。

但是您的视图中没有@Html.AntiForgeryToken() 。

@using (Ajax.BeginForm("PartNumberUpdate", "Parts", new AjaxOptions() { HttpMethod = "POST", UpdateTargetId = "PartNumControls", OnSuccess = "ajaxPartUpdate" })){
    @Html.AntiForgeryToken() //Add me
    //skip
}