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Json.Encode works in a CS file, but not in CSHTML

In my CS file, I am doing the following and working as expected.

using System.Web.Helpers;
String json = System.Web.Helpers.Json.Encode(null);

However, in my CSHTML file, I do the following, and here I get an error when Json is not recognized in context.

@{ Layout = null; }
@using TestService.ServiceReference;
@using System.Web.Helpers;
<!DOCTYPE html>
<html>
...
<script type="text/javascript">
  var output3 = "! @Html.Raw(Json.Encode(ViewBag.MyArray))";
...

How can this be explained / corrected? Googling gave me nada, zero, ziltch ...

Edit

I added the assembly tag to my CONFIG file, as suggested, but the error I get is that it is unknown to the configuration. This is what my (root) CONFIG looks like.

<system.web>
  <compilation debug="true" targetFramework="4.0" />
  <assemblies>
    <add assembly="System.Web.Helpers, Version=2.0.0.0, 
                  Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
  </assemblies>
  ...

However, I noticed that instead I have the following in the CONFIG file. I guess this is equivalent. It?

<runtime>
  <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
    <dependentAssembly>
      <assemblyIdentity name="System.Web.Helpers" publicKeyToken="31bf3856ad364e35" />
      <bindingRedirect oldVersion="1.0.0.0-2.0.0.0" newVersion="2.0.0.0" />
    </dependentAssembly>
    <dependentAssembly>
      <assemblyIdentity name="System.Web.Mvc" publicKeyToken="31bf3856ad364e35" />
      <bindingRedirect oldVersion="1.0.0.0-4.0.0.0" newVersion="4.0.0.0" />
    </dependentAssembly>
    <dependentAssembly>
      <assemblyIdentity name="System.Web.WebPages" publicKeyToken="31bf3856ad364e35" />
      <bindingRedirect oldVersion="1.0.0.0-2.0.0.0" newVersion="2.0.0.0" />
    </dependentAssembly>
  </assemblyBinding>
</runtime>
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2 answers

, . , , , , .

1. MVC 4 (Basic) View (, ReSharper 7 )

@{
    ViewBag.Title = "Index";
    ViewBag.Array = new string[] {"apples", "oranges", "bananas"};
}

<script type="text/javascript">
    var stuff = "! @Html.Raw(Json.Encode(ViewBag.Array))";
    alert(stuff);
</script>

<h2>Index</h2>

2.Compiled , : CS0103: The name 'Json' does not exist in the current context.

3. , Views web.config, . .

4. (<assemblies> <add assembly="System.Web.Helpers, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" /> </assemblies>) web.config ( web.config, Views)

  <system.web>
    <httpRuntime targetFramework="4.5" />
    <compilation debug="true" targetFramework="4.5">
      <!--Add the following.  Ensure compilation is not self closing,
          it was on mine-->    
      <assemblies>
        <add assembly="System.Web.Helpers, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
      </assemblies>
    </compilation>

5.Recompile HTML-

<html>
<head>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width" />
    <title>Index</title>
    <link href="/Content/site.css" rel="stylesheet"/>

    <script src="/Scripts/modernizr-2.6.2.js"></script>

</head>
<body>


<script type="text/javascript">
    var stuff = "! ["apples","oranges","bananas"]";
    alert(stuff);
</script>

<h2>Index</h2>


    <script src="/Scripts/jquery-1.8.2.js"></script>


</body>
</html>
+6

, System.Web.Helpers " " true

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