Asp.net mvc 5 正在尝试使用Web Api 2.2升级到ASP.NET MVC5

我已经用WebAPI模板创建了一个ASP.NET MVC4项目。开箱即用

现在我转到NuGet Package Mgr，并尝试升级到MVC5和WebApi2.2

这现在使我的网站项目崩溃：

             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.InvalidCastException: [A]System.Web.WebPages.Razor.Configuration.HostSection cannot be cast to [B]System.Web.WebPages.Razor.Configuration.HostSection. Type A originates from 'System.Web.WebPages.Razor, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' in the context 'Default' at location 'C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System.Web.WebPages.Razor\v4.0_2.0.0.0__31bf3856ad364e35\System.Web.WebPages.Razor.dll'. Type B originates from 'System.Web.WebPages.Razor, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' in the context 'Default' at location 'C:\Windows\Microsoft.NET\Framework64\v4.0.30319\Temporary ASP.NET Files\root\1144d5e1\eec3db38\assembly\dl3\2e964601\053540f5_e81bd001\System.Web.WebPages.Razor.dll'.

试图在这篇文章中找到答案-

   http://stackoverflow.com/questions/17454852/upgrading-from-mvc4-to-mvc5

但是，我仍然收到上面的

system.Web.WebPages.Razor.config错误

更新my web.config后，在Area\Views下，它现在看起来如下所示：

<?xml version="1.0"?>

<configuration>
  <configSections>
    <sectionGroup name="system.web.webPages.razor" type="System.Web.WebPages.Razor.Configuration.RazorWebSectionGroup, System.Web.WebPages.Razor, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35">
      <section name="host" type="System.Web.WebPages.Razor.Configuration.HostSection, System.Web.WebPages.Razor, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" />
      <section name="pages" type="System.Web.WebPages.Razor.Configuration.RazorPagesSection, System.Web.WebPages.Razor, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" />
    </sectionGroup>
  </configSections>

  <system.web.webPages.razor>
    <host factoryType="System.Web.Mvc.MvcWebRazorHostFactory, System.Web.Mvc, Version=5.2.2, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />

    <pages pageBaseType="System.Web.Mvc.WebViewPage">
      <namespaces>
        <add namespace="System.Web.Mvc" />
        <add namespace="System.Web.Mvc.Ajax" />
        <add namespace="System.Web.Mvc.Html" />
        <add namespace="System.Web.Routing" />
      </namespaces>
    </pages>
  </system.web.webPages.razor>

  <appSettings>
    <add key="webpages:Enabled" value="false" />
  </appSettings>

  <system.web>
    <httpHandlers>
      <add path="*" verb="*" type="System.Web.HttpNotFoundHandler"/>
    </httpHandlers>
    <compilation debug="true">
      <assemblies>
        <add assembly="System.Net.Http, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" />

      </assemblies>
    </compilation>
    <!--
        Enabling request validation in view pages would cause validation to occur
        after the input has already been processed by the controller. By default
        MVC performs request validation before a controller processes the input.
        To change this behavior apply the ValidateInputAttribute to a
        controller or action.
    -->
    <pages
        validateRequest="false"
        pageParserFilterType="System.Web.Mvc.ViewTypeParserFilter, System.Web.Mvc, Version=5.2.2, Culture=neutral, PublicKeyToken=31BF3856AD364E35"
        pageBaseType="System.Web.Mvc.ViewPage, System.Web.Mvc, Version=5.2.2, Culture=neutral, PublicKeyToken=31BF3856AD364E35"
        userControlBaseType="System.Web.Mvc.ViewUserControl, System.Web.Mvc, Version=5.2.2, Culture=neutral, PublicKeyToken=31BF3856AD364E35">
      <controls>
        <add assembly="System.Web.Mvc, Version=5.2.2, Culture=neutral, PublicKeyToken=31BF3856AD364E35" namespace="System.Web.Mvc" tagPrefix="mvc" />
      </controls>
    </pages>
  </system.web>

  <system.webServer>
    <validation validateIntegratedModeConfiguration="false" />

    <handlers>
      <remove name="BlockViewHandler"/>
      <add name="BlockViewHandler" path="*" verb="*" preCondition="integratedMode" type="System.Web.HttpNotFoundHandler" />
    </handlers>
  </system.webServer>
</configuration>



这是我的packages.config：

<?xml version="1.0" encoding="utf-8"?>
<packages>
  <package id="EntityFramework" version="5.0.0" targetFramework="net45" />
  <package id="jQuery" version="1.8.2" targetFramework="net45" />
  <package id="jQuery.UI.Combined" version="1.8.24" targetFramework="net45" />
  <package id="jQuery.Validation" version="1.10.0" targetFramework="net45" />
  <package id="knockoutjs" version="2.2.0" targetFramework="net45" />
  <package id="Microsoft.AspNet.Mvc" version="5.2.2" targetFramework="net45" />
  <package id="Microsoft.AspNet.Mvc.FixedDisplayModes" version="5.0.0" targetFramework="net45" />
  <package id="Microsoft.AspNet.Providers.Core" version="1.2" targetFramework="net45" />
  <package id="Microsoft.AspNet.Providers.LocalDB" version="1.1" targetFramework="net45" />
  <package id="Microsoft.AspNet.Razor" version="3.2.2" targetFramework="net45" />
  <package id="Microsoft.AspNet.Web.Optimization" version="1.0.0" targetFramework="net45" />
  <package id="Microsoft.AspNet.WebApi" version="4.0.20710.0" targetFramework="net45" />
  <package id="Microsoft.AspNet.WebApi.Client" version="4.0.20710.0" targetFramework="net45" />
  <package id="Microsoft.AspNet.WebApi.Core" version="4.0.20710.0" targetFramework="net45" />
  <package id="Microsoft.AspNet.WebApi.HelpPage" version="4.0.30506" targetFramework="net45" />
  <package id="Microsoft.AspNet.WebApi.OData" version="4.0.0" targetFramework="net45" />
  <package id="Microsoft.AspNet.WebApi.Tracing" version="4.0.0" targetFramework="net45" />
  <package id="Microsoft.AspNet.WebApi.WebHost" version="4.0.20710.0" targetFramework="net45" />
  <package id="Microsoft.AspNet.WebPages" version="3.2.2" targetFramework="net45" />
  <package id="Microsoft.Data.Edm" version="5.2.0" targetFramework="net45" />
  <package id="Microsoft.Data.OData" version="5.2.0" targetFramework="net45" />
  <package id="Microsoft.jQuery.Unobtrusive.Ajax" version="2.0.30116.0" targetFramework="net45" />
  <package id="Microsoft.jQuery.Unobtrusive.Validation" version="2.0.30116.0" targetFramework="net45" />
  <package id="Microsoft.Net.Http" version="2.0.20710.0" targetFramework="net45" />
  <package id="Microsoft.Web.Infrastructure" version="1.0.0.0" targetFramework="net45" />
  <package id="Modernizr" version="2.6.2" targetFramework="net45" />
  <package id="Newtonsoft.Json" version="4.5.11" targetFramework="net45" />
  <package id="System.Spatial" version="5.2.0" targetFramework="net45" />
  <package id="WebGrease" version="1.3.0" targetFramework="net45" />
</packages>


你能显示你的路线配置和控制器吗？我已经更新了我原来的帖子。非常感谢。在这里，您可以看到web api路由是如何工作的。您是否检查了主配置（绑定重定向）以及区域中的任何配置。。。我将启动一个新的默认MVC5项目，并比较配置。。我以前见过这种情况，但记不起修复方法/