値はnullにはできません。パラメータ名：incomingMarkupParser

Question

私は作業が必要なMVC3プロジェクトを持っています。実行するたびにこのコンパイル例外が発生します。

値をnullにすることはできません。パラメータ名：incomingMarkupParser

これを修正するにはどうすればよいですか？ Razorに問題があるようです。 Viewsフォルダ内の私のweb.configは、

<?xml version="1.0"?> 

<configuration> 
    <configSections> 
    <sectionGroup name="system.web.webPages.razor" type="System.Web.WebPages.Razor.Configuration.RazorWebSectionGroup, System.Web.WebPages.Razor, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"> 
     <section name="host" type="System.Web.WebPages.Razor.Configuration.HostSection, System.Web.WebPages.Razor, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" /> 
     <section name="pages" type="System.Web.WebPages.Razor.Configuration.RazorPagesSection, System.Web.WebPages.Razor, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" /> 
    </sectionGroup> 
    </configSections> 

    <system.web> 
    <httpHandlers> 
     <add path="*" verb="*" type="System.Web.HttpNotFoundHandler" /> 
    </httpHandlers> 

    <!-- 
     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=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" pageBaseType="System.Web.Mvc.ViewPage, System.Web.Mvc, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" userControlBaseType="System.Web.Mvc.ViewUserControl, System.Web.Mvc, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"> 
     <controls> 
     <add assembly="System.Web.Mvc, Version=3.0.0.0, 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> 


    <system.web.webPages.razor> 
    <host factoryType="System.Web.Mvc.MvcWebRazorHostFactory, System.Web.Mvc, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" /> 
    <pages pageBaseType="System.Web.Mvc.WebViewPage"> 
     <namespaces> 
     <add namespace="ITOC4.HtmlHelpers" /> 
     <add namespace="ITOC4.Models" /> 
     <add namespace="ITOC4.Web.Models" /> 
     <add namespace="System.Web.Mvc" /> 
     <add namespace="System.Web.Mvc.Ajax" /> 
     <add namespace="System.Web.Mvc.Html" /> 
     <add namespace="System.Web.Routing" /> 
     <add namespace="Omu.Awesome.Core"/> 
     <add namespace="Omu.Awesome.Mvc.Helpers"/> 
     </namespaces> 
    </pages> 
    </system.web.webPages.razor> 

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

メインフォルダ（簡潔にするために行が削除されています）では、web.configがあります。

<?xml version="1.0" encoding="utf-8"?> 
<configuration> 
    <configSections> 
    <sectionGroup name="elmah"> 
    </configSections> 
    <elmah> 
    </elmah> 
    <appSettings> 
    </appSettings> 
    <connectionStrings> 
    </connectionStrings> 
    <system.web> 
    <customErrors mode="Off" defaultRedirect="~/Error/Unknown"> 
     <error statusCode="404" redirect="~/Error/NotFound" /> 
    </customErrors> 
    <httpModules> 
     <add name="ErrorLog" type="Elmah.ErrorLogModule, Elmah" /> 
     <add name="ErrorMail" type="Elmah.ErrorMailModule, Elmah" /> 
     <add name="ErrorFilter" type="Elmah.ErrorFilterModule, Elmah" /> 
    </httpModules> 
    <compilation debug="true" targetFramework="4.0"> 
     <assemblies> 
     <add assembly="System.Web.Abstractions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" /> 
     <add assembly="System.Web.Routing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" /> 
     <add assembly="System.Web.Mvc, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" /> 
     <add assembly="System.Data.Entity, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" /> 
     <add assembly="System.Web.Helpers, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" /> 
     <add assembly="System.Web.WebPages, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" /> 
     </assemblies> 
    </compilation> 
    <sessionState timeout="2880"></sessionState> 
    <authentication mode="Forms"> 
     <forms loginUrl="~/Account/LogOn" timeout="2880" /> 
    </authentication> 
    <membership> 
    </membership> 
    <profile> 
    </profile> 
    <roleManager enabled="true"> 
    </roleManager> 
    <pages> 
     <namespaces> 
     <add namespace="System.Web.Mvc" /> 
     <add namespace="System.Web.Mvc.Ajax" /> 
     <add namespace="System.Web.Mvc.Html" /> 
     <add namespace="System.Web.Routing" /> 
     <add namespace="System.Web.Helpers" /> 
     <add namespace="System.Web.WebPages" /> 
     <add namespace="Omu.Awesome.Core" /> 
     <add namespace="Omu.Awesome.Mvc.Helpers" /> 
     </namespaces> 
    </pages> 
    </system.web> 
    <system.webServer> 
    </system.webServer> 
    <runtime> 
    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1"> 
     <dependentAssembly> 
     <assemblyIdentity name="System.Web.Razor" publicKeyToken="31BF3856AD364E35" culture="neutral" /> 
     <bindingRedirect oldVersion="0.0.0.0-2.0.0.0" newVersion="2.0.0.0" /> 
     </dependentAssembly> 
     <dependentAssembly> 
     <assemblyIdentity name="System.Runtime" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" /> 
     <bindingRedirect oldVersion="0.0.0.0-2.6.10.0" newVersion="2.6.10.0" /> 
     </dependentAssembly> 
     <dependentAssembly> 
     <assemblyIdentity name="System.Web.WebPages" publicKeyToken="31bf3856ad364e35" culture="neutral" /> 
     <bindingRedirect oldVersion="0.0.0.0-2.0.0.0" newVersion="2.0.0.0" /> 
     </dependentAssembly> 
     <dependentAssembly> 
     <assemblyIdentity name="System.Web.Razor" publicKeyToken="31bf3856ad364e35" culture="neutral" /> 
     <bindingRedirect oldVersion="0.0.0.0-1.0.0.0" newVersion="1.0.0.0" /> 
     </dependentAssembly> 
     <dependentAssembly> 
     <assemblyIdentity name="System.Web.Mvc" publicKeyToken="31bf3856ad364e35" /> 
     <bindingRedirect oldVersion="0.0.0.0-3.0.0.1" newVersion="3.0.0.1" /> 
     </dependentAssembly> 
     <dependentAssembly> 
     <assemblyIdentity name="PagedList" publicKeyToken="abbb863e9397c5e1" culture="neutral" /> 
     <bindingRedirect oldVersion="0.0.0.0-1.17.0.0" newVersion="1.17.0.0" /> 
     </dependentAssembly> 
    </assemblyBinding> 
    </runtime> 
    <entityFramework> 
    </entityFramework> 
</configuration> 

私はこれらの行を持っています。

<package id="Microsoft.AspNet.Mvc" version="3.0.50813.1" targetFramework="net40" /> 
    <package id="Microsoft.AspNet.Razor" version="1.0.20105.408" targetFramework="net40" /> 
    <package id="Microsoft.AspNet.WebPages" version="1.0.20105.408" targetFramework="net40" /> 

Answer 1

web.configファイルにSystem.Web.WebPages.Razorが含まれていませんでした。一度私はそれを入れてOKを働いた。