Asp.net MVC Ajax Post - 查找视图而不是控制器操作

Question

我正在使用 AJAX 来 post 用户从下拉列表中选择返回到我的控制器中的操作结果，这将 return 局部视图。这工作正常。但是，我无法确定我更改了什么，现在它因 500 错误而失败：

The view 'Create_Item_Fields_NoForm' or its master was not found or no view engine supports the searched locations. The following locations were searched: ~/Views/Request/Create_Item_Fields_NoForm.aspx ~/Views/Request/Create_Item_Fields_NoForm.ascx ~/Views/Shared/Create_Item_Fields_NoForm.aspx ~/Views/Shared/Create_Item_Fields_NoForm.ascx ~/Views/Request/Create_Item_Fields_NoForm.cshtml ~/Views/Request/Create_Item_Fields_NoForm.vbhtml ~/Views/Shared/Create_Item_Fields_NoForm.cshtml ~/Views/Shared/Create_Item_Fields_NoForm.vbhtml

为什么要查找视图而不是控制器操作？

置顶

@using (Html.BeginForm(null, null, FormMethod.Post, new { id = "form" }))

HTMLDropDownListFor & Div 部分视图

<div id="collapseTwo" class="panel-collapse collapse" role="tabpanel" aria-labelledby="headingTwo">
    <div class="panel-body">
        <div class="form-group">
            @Html.LabelFor(model => model.itemtypes, htmlAttributes: new { @class = "control-label col-md-2" })
            @Html.DropDownListFor(model => model.itemtype, (SelectList)Model.myCollection, "Select Type", new { @id = "dropchange", @class = "form-control" })
            @Html.ValidationMessageFor(model => model.itemtypes, "", new { @class = "text-danger" })
        </div>
    <div id="itemcreate">
</div>

AJAX Post

<script>
    $(document).ready(function () {
        $('#dropchange').change(function (e) {
            e.preventDefault();
            var data = $('form').serializeArray();
            $.ajax({
                //contentType: 'application/json; charset=utf-8',
                type: 'POST',
                url: '@Url.Action("Create_Item_Fields_NoForm", "Request")',
                data: data
            }).done(function (result) {
                $("#itemcreate").html(result)
            })
            .fail(function (jqXHR, textStatus, errorThrown) { alert(jqXHR.status, textStatus.toString, errorThrown.toString); });
        });
    });
</script>

控制器动作结果

[HttpPost]
public ActionResult Create_Item_Fields_NoForm (vmRequestCreate viewmodel)
{
    if (Request.IsAjaxRequest() && ModelState.IsValid)
    {   
        if (viewmodel.itemtype.Equals("One"))
        {
            return PartialView("_OneCreate");
        }
        else if (viewmodel.extractype.ToString() == "Two")
        {
            return PartialView("_TwoCreate");
        }
    }
    return View();
}

Answer 1

您的 vmRequestCreate 视图模型无效，因此您点击了

return View();

您的 POST 方法中的代码行。因为您没有指定视图名称，它将默认使用与控制器方法同名的视图，即 Create_Item_Fields_NoForm.cshtml 不存在，因此会出现错误。将代码更改为 return 存在的视图名称（或为 Create_Item_Fields_NoForm.cshtml 创建视图）

return View("yourViewName");

Asp.net MVC Ajax Post - 查找视图而不是控制器操作

Asp.net MVC Ajax Post - Looks for View Instead of Controller Action

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asp.net-mvc

partial-views