未找到部分视图 'First.cshtml' 或没有视图引擎支持搜索的位置

The partial view 'First.cshtml' was not found or no view engine supports the searched locations

我正在尝试在 div 中点击调用部分视图。我写了这个:

@Ajax.ActionLink("Second", "Second", new AjaxOptions()
{
    HttpMethod = "GET",
    UpdateTargetId = "partials",
    InsertionMode = InsertionMode.Replace
})

<div id="partials">
</div>

<script src="https://code.jquery.com/jquery-2.1.3.min.js" type="text/javascript"></script>
<script src="http://ajax.aspnetcdn.com/ajax/jquery.validate/1.9/jquery.validate.min.js"></script>
<script src="http://ajax.aspnetcdn.com/ajax/jquery.validate/1.9/additional-methods.min.js"></script>
<script src="http://ajax.aspnetcdn.com/ajax/mvc/5.2/jquery.validate.unobtrusive.min.js" type="text/javascript"></script>

在我的 Index.cshtml. 中,我的控制器如下所示:

public ActionResult Index()
        {
            return View();
        }

        public PartialViewResult Second()
        {

            return PartialView("Second.cshtml");
        }

但我的错误是我的部分视图无法在以下位置找到:

~/Views/switchPartial/Second.cshtml.aspx
~/Views/switchPartial/Second.cshtml.ascx
~/Views/Shared/Second.cshtml.aspx
~/Views/Shared/Second.cshtml.ascx
~/Views/switchPartial/Second.cshtml.cshtml
~/Views/switchPartial/Second.cshtml.vbhtml
~/Views/Shared/Second.cshtml.cshtml
~/Views/Shared/Second.cshtml.vbhtml

但我在 switchPartial 文件夹中。

如果我在 div 中写入 @Html.Partial("Second"),它会正确呈现我的部分视图。

我做错了什么?

无需在部分名称末尾包含文件扩展名。尝试:

return PartialView("Second");

通过不包括文件扩展名,每个注册的 ViewEngines 都有机会解析请求的视图(在 Second.cshtmlSecond.vbhtmlSecond.aspx 中).