Visual Studio displaying errors even if projects build successfully in Razor html

Question

Intellisense not working for any razor html tags. Also showing Red line in all razor html tags (@Html.TexBox, @Html.DropdownList MultiSelect etc)

Three types error are showing in Visual Studio Error Window.

Error #1:

The type arguments for method 'System.Web.Mvc.Html.InputExtensions.TextBoxFor(System.Web.Mvc.HtmlHelper, System.Linq.Expressions.Expression>, System.Collections.Generic.IDictionary)' cannot be inferred from the usage. Try specifying the type arguments explicitly.

Error #2:

One or more types required to compile a dynamic expression cannot be found. Are you missing references to Microsoft.CSharp.dll and System.Core.dll?

Error #3:

Error 40 The type arguments for method 'System.Web.Mvc.Html.InputExtensions.HiddenFor(System.Web.Mvc.HtmlHelper, System.Linq.Expressions.Expression>)' cannot be inferred from the usage. Try specifying the type arguments explicitly.

Please see the attached link for more information.

Answer 1

Problem solved deleted all the contents from the following folder.

C:\Windows\Microsoft.NET\Framework64\v4.0.30319\Temporary ASP.NET Files C:\Windows\Microsoft.NET\Framework\v4.0.30319\Temporary ASP.NET Files

Thank you all for your time. :)

Answer 2

You need to have following section in your web.config (Root should be fine)

    <system.web>
        <compilation debug="true" targetFramework="4.6.1">
            <assemblies>
                <add assembly="System.Web.Helpers, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
            </assemblies>
       </compilation>
    </system.web>

Replace System.Web.Helpers version as per your reference.