My project is giving me an error that I cannot find a solution to on the internet RSS

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  johnboyman12

  Member

  9 Points

  60 Posts

  My project is giving me an error that I cannot find a solution to on the internet

  Oct 23, 2020 01:29 PM|johnboyman12|LINK

  Hello. I am running an mvc5 website. My ms visual compiler is giving me this error.

  Severity    Code    Description    Project    File    Line    Suppression State
  Error    CS0012    The type 'Expression<>' is defined in an assembly that is not referenced. You must add a reference to assembly 'System.Core, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'.    1_Views_Home_Account.cshtml    C:\Users\MyName\source\repos\VmFusion2020\VmFusion2020\Views\Home\Account.cshtml    62    Active

  The error is comping from this code in my .cshtml files. @Html.LabelFor   , @Html.PasswordFor , Html.ValidationMessageFor.......

  I tried to add that assembly but the compiler says its already added by default. I never had this issue before. Is anyone familiar with this problem . Thanks for any tips.

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  Sean Fang

  Contributor

  2880 Points

  846 Posts

  Re: My project is giving me an error that I cannot find a solution to on the internet

  Oct 27, 2020 01:15 AM|Sean Fang|LINK

  Hi johnboyman12,

   

  Could you please provide more information for us targeting the problem?

  • Have you added the related assembly in root web.config, not the web.config in views folder? 
  • Is the version of the .NET framework for the compilation property in web.config the same as that specified in the project properties? 
  • Is the version of the MVC assembly  in the web.config is the same as the MVC assembly you are using in your project. 

   

  To summarize, you have to add the assembly references to the web.config correctly with respect to your real environment.

  Related resolution from SO:

  https://stackoverflow.com/questions/31599087/vs-2015-intellisense-assembly-not-referenced-error

  https://stackoverflow.com/questions/31086850/the-type-expression-is-defined-in-an-assembly-that-is-not-referenced

   

  Hope helps.

  Best regards,

  Sean

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