asp.net - How to make razor view engine to use c# 6.0

Question

Currently my razor view engine throws and error saying "Please use language version 6 or higher". That may just be resharper giving me a pointer. But how do i make razor use c# 6.0. Rest of my solution in the cs files i can use all the new version 7 features.

Answer 1

I believe this is due to a bug in the templates for web.config when the project is upgraded to a newer version of the .net framework.

I was able to fix this by going in to web.config, finding the system.codedom node, and changing the content to look like this:

<compilers>
  <compiler language="c#;cs;csharp" extension=".cs" type="Microsoft.CodeDom.Providers.DotNetCompilerPlatform.CSharpCodeProvider, Microsoft.CodeDom.Providers.DotNetCompilerPlatform, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" warningLevel="4" compilerOptions="/langversion:6 /nowarn:1659;1699;1701" />
  <compiler language="vb;vbs;visualbasic;vbscript" extension=".vb" type="Microsoft.CodeDom.Providers.DotNetCompilerPlatform.VBCodeProvider, Microsoft.CodeDom.Providers.DotNetCompilerPlatform, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" warningLevel="4" compilerOptions="/langversion:14 /nowarn:41008 /define:_MYTYPE=&quot;Web&quot; /optionInfer+" />
</compilers>