ASP.NET MVC 4 Project - Lost Intellisense Razor

Question

I recently upgraded an ASP.NET MVC project from v3 to v4, and now my .cshtml Razor views have lost intellisense when editing in Visual Studio. Keywords and auxiliary properties, such as @model, @Url, @Html, etc., are not recognized and produce errors in VS. When launched, the application itself works great.

I tried the proposed solutions from various online sources, including SO, most of which are related to web.config settings. I was above them, and I'm sure my configuration settings are correct for MVC 4:

<configuration>
    <configSections>
        <sectionGroup name="system.web.webPages.razor" type="System.Web.WebPages.Razor.Configuration.RazorWebSectionGroup, System.Web.WebPages.Razor, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35">
            <section name="host" type="System.Web.WebPages.Razor.Configuration.HostSection, System.Web.WebPages.Razor, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" />
            <section name="pages" type="System.Web.WebPages.Razor.Configuration.RazorPagesSection, System.Web.WebPages.Razor, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" />
        </sectionGroup>
</configSections>

<system.web.webPages.razor>
    <host factoryType="System.Web.Mvc.MvcWebRazorHostFactory, System.Web.Mvc, Version=4.0.0.0, 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.Optimization"/>
           <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>    
    <pages
    validateRequest="false"
    pageParserFilterType="System.Web.Mvc.ViewTypeParserFilter, System.Web.Mvc, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"
    pageBaseType="System.Web.Mvc.ViewPage, System.Web.Mvc, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"
    userControlBaseType="System.Web.Mvc.ViewUserControl, System.Web.Mvc, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35">
        <controls>
            <add assembly="System.Web.Mvc, Version=4.0.0.0, 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>

, , . web.config MVC 3, MVC 4.0 3.0, Razor/WebPages - 2.0 1.0, intellisense (, , ).

, , Visual Studio - , web.config, Razor intellisense. ASP.NET MVC 4 NuGet, , . MVC, .

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Answer 1

, ( http://www.asp.net/whitepapers/mvc4-release-notes):

• " ". " _ .csproj".
• ProjectTypeGuids {E53F8FEA-EAE0-44A6-8774-FFD645390401} {E3E379DF-F4C6-4180-9B81-6769533ABE47}.

Answer 2

, System.Web.Helpers , , System.Web.WebPages:

:

<namespaces>
  <add namespace="System.Web.Mvc" />
  <add namespace="System.Web.Mvc.Ajax" />
  <add namespace="System.Web.Mvc.Html" />
  <add namespace="System.Web.Optimization"/>
  <add namespace="System.Web.Routing" />
</namespaces>

<namespaces>
  <add namespace="System.Web.Helpers" />
  <add namespace="System.Web.Mvc" />
  <add namespace="System.Web.Mvc.Ajax" />
  <add namespace="System.Web.Mvc.Html" />
  <add namespace="System.Web.Optimization"/>
  <add namespace="System.Web.Routing" />
  <add namespace="System.Web.WebPages" />
</namespaces>