如何在 MVC 5 C# 中正确获取要渲染的嵌套文件夹

Question

如何在 MVC 5 C# 中正确获取要渲染的嵌套文件夹

Fil*_* DO 2 c# asp.net-mvc .net-4.5 asp.net-mvc-5

我已经得到了传统网站，所有 MVC 5 都按预期工作，一切都正确渲染并且工作正常。

我添加了一个仪表板，并且我尝试将此仪表板设置为文件夹结构，使其与 MVC 5 C# 网站的其余部分隔离；但是，我收到一条服务器错误，指出布局引擎找不到我的部分视图。

现在，当视图本身加载时，这通过了测试并且确实返回了正确的视图，当布局引擎无法找到嵌套的部分视图时，问题就出现了。

由于我没有完全理解 MVC 5，所以我对这一点感到迷失。

现在，就像之前提到的，就开箱即用的文件夹结构而言，一切都完美运行，但是当我创建嵌套文件夹并放置部分视图时，MVC 5 引擎无法找到这些嵌套的部分视图。

嵌套这些部分视图的原因很明显，我将实际的传统网站与用户仪表板视图分开。

当我单击指向索引文件的操作链接时，这可以工作，但是当主体（视图）尝试渲染它时，找不到嵌套的部分视图。

我在这里缺少什么？我希望我提供了足够的信息，使回答这个问题尽可能容易。

加载实际用户仪表板索引有效

 @{
    ViewBag.Title = "Your Dashboard";
    Layout = "~/Views/Shared/UserDashboard/_Layout_Dashboard.cshtml";
}
<!-- Content Wrapper. Contains page content -->
<div class="content-wrapper">

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加载实际的部分是服务器说不不，你没有正确执行此操作的地方。

这是确切的服务器错误，请建议我实施此错误的正确方法。

Server Error in '/' Application.
The partial view '~/Views/Shared/UserDashboard/_PartialHeader_Dashboard' was not found or no view engine supports the searched locations. The following locations were searched:
~/Views/Shared/UserDashboard/_PartialHeader_Dashboard
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.InvalidOperationException: The partial view '~/Views/Shared/UserDashboard/_PartialHeader_Dashboard' was not found or no view engine supports the searched locations. The following locations were searched:
~/Views/Shared/UserDashboard/_PartialHeader_Dashboard

Source Error:


Line 26: <script src="http://translate.google.com/translate_a/element.js?cb=googleTranslateElementInit"></script>*@
Line 27: <body>
Line 28:     @Html.Partial("~/Views/Shared/UserDashboard/_PartialHeader_Dashboard")
Line 29:     @Html.Partial("~/Views/Shared/UserDashboard/_PartialLeftNav_Dashboard")
Line 30:     @RenderBody()


Source File: D:\Users\Erik\Documents\visual studio 2017\Projects\BuilderBits\BuilderBits\Views\Shared\UserDashboard\_Layout_Dashboard.cshtml    Line: 28

Stack Trace:


[InvalidOperationException: The partial view '~/Views/Shared/UserDashboard/_PartialHeader_Dashboard' was not found or no view engine supports the searched locations. The following locations were searched:
~/Views/Shared/UserDashboard/_PartialHeader_Dashboard]
   System.Web.Mvc.HtmlHelper.FindPartialView(ViewContext viewContext, String partialViewName, ViewEngineCollection viewEngineCollection) +327
   System.Web.Mvc.HtmlHelper.RenderPartialInternal(String partialViewName, ViewDataDictionary viewData, Object model, TextWriter writer, ViewEngineCollection viewEngineCollection) +264
   System.Web.Mvc.Html.PartialExtensions.Partial(HtmlHelper htmlHelper, String partialViewName, Object model, ViewDataDictionary viewData) +91
   System.Web.Mvc.Html.PartialExtensions.Partial(HtmlHelper htmlHelper, String partialViewName) +32
   ASP._Page_Views_Shared_UserDashboard__Layout_Dashboard_cshtml.Execute() in D:\Users\Erik\Documents\visual studio 2017\Projects\BuilderBits\BuilderBits\Views\Shared\UserDashboard\_Layout_Dashboard.cshtml:28
   System.Web.WebPages.WebPageBase.ExecutePageHierarchy() +197
   System.Web.Mvc.WebViewPage.ExecutePageHierarchy() +105
   System.Web.WebPages.WebPageBase.ExecutePageHierarchy(WebPageContext pageContext, TextWriter writer, WebPageRenderingBase startPage) +90
   System.Web.WebPages.<>c__DisplayClass3.<RenderPageCore>b__2(TextWriter writer) +232
   System.Web.WebPages.HelperResult.WriteTo(TextWriter writer) +10
   System.Web.WebPages.WebPageBase.Write(HelperResult result) +80
   System.Web.WebPages.WebPageBase.RenderSurrounding(String partialViewName, Action`1 body) +63
   System.Web.WebPages.WebPageBase.PopContext() +237
   System.Web.WebPages.WebPageBase.ExecutePageHierarchy(WebPageContext pageContext, TextWriter writer, WebPageRenderingBase startPage) +98
   System.Web.Mvc.RazorView.RenderView(ViewContext viewContext, TextWriter writer, Object instance) +235
   System.Web.Mvc.BuildManagerCompiledView.Render(ViewContext viewContext, TextWriter writer) +107
   System.Web.Mvc.ViewResultBase.ExecuteResult(ControllerContext context) +291
   System.Web.Mvc.ControllerActionInvoker.InvokeActionResult(ControllerContext controllerContext, ActionResult actionResult) +13
   System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList`1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult) +56
   System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList`1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult) +420
   System.Web.Mvc.ControllerActionInvoker.InvokeActionResultWithFilters(ControllerContext controllerContext, IList`1 filters, ActionResult actionResult) +52
   System.Web.Mvc.Async.<>c__DisplayClass2b.<BeginInvokeAction>b__1c() +173
   System.Web.Mvc.Async.<>c__DisplayClass21.<BeginInvokeAction>b__1e(IAsyncResult asyncResult) +100
   System.Web.Mvc.Async.WrappedAsyncResult`1.CallEndDelegate(IAsyncResult asyncResult) +10
   System.Web.Mvc.Async.WrappedAsyncResultBase`1.End() +49
   System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeAction(IAsyncResult asyncResult) +27
   System.Web.Mvc.Controller.<BeginExecuteCore>b__1d(IAsyncResult asyncResult, ExecuteCoreState innerState) +13
   System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult) +29
   System.Web.Mvc.Async.WrappedAsyncResultBase`1.End() +49
   System.Web.Mvc.Controller.EndExecuteCore(IAsyncResult asyncResult) +36
   System.Web.Mvc.Controller.<BeginExecute>b__15(IAsyncResult asyncResult, Controller controller) +12
   System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult) +22
   System.Web.Mvc.Async.WrappedAsyncResultBase`1.End() +49
   System.Web.Mvc.Controller.EndExecute(IAsyncResult asyncResult) +26
   System.Web.Mvc.Controller.System.Web.Mvc.Async.IAsyncController.EndExecute(IAsyncResult asyncResult) +10
   System.Web.Mvc.MvcHandler.<BeginProcessRequest>b__5(IAsyncResult asyncResult, ProcessRequestState innerState) +21
   System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult) +29
   System.Web.Mvc.Async.WrappedAsyncResultBase`1.End() +49
   System.Web.Mvc.MvcHandler.EndProcessRequest(IAsyncResult asyncResult) +28
   System.Web.Mvc.MvcHandler.System.Web.IHttpAsyncHandler.EndProcessRequest(IAsyncResult result) +9
   System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +9765045
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +155

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Answer 1

Shy*_*yju 5

当您尝试使用包含部分视图时@Html.Partial("_PartialHeader_Dashboard")，MVC 框架将尝试根据 MVC 约定从以下位置加载部分视图。

~/Views/DirectoryWithYourCurrentControllerName/
~/Views/Shared/

框架不知道您的部分视图位于子目录内，除非您通过扩展视图引擎并指定视图文件位置（ViewLocationFormats）告诉框架这样做。您所需要做的就是添加您的自定义位置。

你有2个选择

使用目录名（位于下shared）调用分部视图

@Html.Partial("UserDashboard/_PartialHeader_Dashboard")

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或者

使用完整文件路径

@Html.Partial("~/Views/Shared/UserDashboard/_PartialHeader_Dashboard.cshtml")

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但更好的选择是考虑Areas。存在用于逻辑地将事物（控制器/视图等）保持在一起的区域。

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