predefined System.Object类型没有定义或导入 [英] Predefined type System.Object is not defined or imported

问题描述

我只在VS 2015 .cshtml文件有这个奇怪的错误。
该错误不出来，当我打开与VS 2013项目。

I'm having this weird error only in .cshtml files in VS 2015. The error doesn't show up when I open the project with VS 2013.

错误CS0246类型或命名空间名称'系统'找不到
  （是否缺少using指令或程序集引用？）

Error CS0246 The type or namespace name 'System' could not be found (are you missing a using directive or an assembly reference?)

下面是我的引用：

<ItemGroup>
<Reference Include="Microsoft.CSharp" />
<Reference Include="Sitecore.Kernel, Version=7.0.0.0, Culture=neutral, processorArchitecture=MSIL">
  <SpecificVersion>False</SpecificVersion>
  <HintPath>N:\XXX\Sitecore.Kernel.dll</HintPath>
</Reference>
<Reference Include="Sitecore.Mvc">
  <HintPath>N:\XXX\Sitecore.Mvc.dll</HintPath>
</Reference>
<Reference Include="System.Web.DynamicData" />
<Reference Include="System.Web.Entity" />
<Reference Include="System.Web.ApplicationServices" />
<Reference Include="System.ComponentModel.DataAnnotations" />
<Reference Include="System" />
<Reference Include="System.Data" />
<Reference Include="System.Core" />
<Reference Include="System.Data.DataSetExtensions" />
<Reference Include="System.Web.Extensions" />
<Reference Include="System.Web.Helpers, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
  <SpecificVersion>False</SpecificVersion>
  <HintPath>N:\XXX\System.Web.Helpers.dll</HintPath>
</Reference>
<Reference Include="System.Web.Mvc, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
  <SpecificVersion>False</SpecificVersion>
  <HintPath>N:\XXX\System.Web.Mvc.dll</HintPath>
</Reference>
<Reference Include="System.Web.Providers">
  <HintPath>N:\XXX\System.Web.Providers.dll</HintPath>
</Reference>
<Reference Include="System.Web.Razor, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
  <SpecificVersion>False</SpecificVersion>
  <HintPath>N:\XXX\System.Web.Razor.dll</HintPath>
</Reference>
<Reference Include="System.Web.WebPages, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
  <SpecificVersion>False</SpecificVersion>
  <HintPath>N:\XXX\System.Web.WebPages.dll</HintPath>
</Reference>
<Reference Include="System.Web.WebPages.Deployment, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
  <SpecificVersion>False</SpecificVersion>
  <HintPath>N:\XXX\System.Web.WebPages.Deployment.dll</HintPath>
</Reference>
<Reference Include="System.Web.WebPages.Razor, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
  <SpecificVersion>False</SpecificVersion>
  <HintPath>N:\XXX\System.Web.WebPages.Razor.dll</HintPath>
</Reference>
<Reference Include="System.Xml.Linq" />
<Reference Include="System.Drawing" />
<Reference Include="System.Web" />
<Reference Include="System.Xml" />
<Reference Include="System.Configuration" />
<Reference Include="System.Web.Services" />
<Reference Include="System.EnterpriseServices" />

什么可能是这个原因？

请参考这个问题，我创建。这是同样的问题：<一href=\"http://stackoverflow.com/questions/33256896/the-type-or-namespace-name-system-could-not-be-found\">The类型或命名空间名称'系统'找不到

Please refer to this question that I created as well. It's the same issue: The type or namespace name 'System' could not be found

推荐答案

我有很多的VS 2015年4 MVC智能感知CSHTML问题，选择刚刚升级到MVC 5.然而，MVC 4应该仍然工作，只是没有完美，根据：<一href=\"https://stackoverflow.com/questions/30123609/does-visual-studio-2015-support-older-versions-of-mvc\">Does的Visual Studio 2015年支持旧版本的MVC？。

I had a lot of CSHTML Intellisense issues with MVC 4 in VS 2015 and opted just to upgrade to MVC 5. However, MVC 4 should still work, just not perfectly, according to: Does Visual Studio 2015 support older versions of MVC?.

这篇关于predefined System.Object类型没有定义或导入的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！