Namespace issue in an MVC3 Razor project.

[Brady]

Today I tried using the Telerik components in a Razor project for the first time.  I followed all setup instructions, but I got the following error:

CS1061: 'System.Web.Mvc.HtmlHelper<dynamic>' does not contain a definition for 'Telerik' and no extension method 'Telerik' accepting a first argument of type 'System.Web.Mvc.HtmlHelper<dynamic>' could be found 

I easily solved this by adding the following line to my master layout, but I am interested to know if anything can be done via web.config, as the normal namespace import in the Telerik instructions doesn't seem to work.

@using Telerik.Web.Mvc.UI

[Atanas Korchev]

Hello Brady,

We are aware of this limitation. It seems that Razor does not read the namespaces from web.config. We have tried reporting that to Microsoft but haven't got any response. I am afraid this is beyond our control.

Regards,
Atanas Korchev
the Telerik team

[a c]

in "yourProject/Views" folder, add a web.config file like following:

<?xml version="1.0"?>

<configuration>
  <configSections>
    <sectionGroup name="system.web.webPages.razor" type="System.Web.WebPages.Razor.Configuration.RazorWebSectionGroup, System.Web.WebPages.Razor, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35">
      <section name="host" type="System.Web.WebPages.Razor.Configuration.HostSection, System.Web.WebPages.Razor, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" />
      <section name="pages" type="System.Web.WebPages.Razor.Configuration.RazorPagesSection, System.Web.WebPages.Razor, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" />
    </sectionGroup>
  </configSections>

  <system.web.webPages.razor>
    <host factoryType="System.Web.Mvc.MvcWebRazorHostFactory, System.Web.Mvc, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
    <pages pageBaseType="System.Web.Mvc.WebViewPage">
      <namespaces>
        <add namespace="System.Collections.Generic"/>
        <add namespace="System.Linq"/>       
        <add namespace="System.Web.Mvc" />
        <add namespace="System.Web.Mvc.Ajax" />
        <add namespace="System.Web.Mvc.Html" />
        <add namespace="System.Web.Routing" />
        <add namespace="Telerik.Web.Mvc"/>
        <add namespace="Telerik.Web.Mvc.UI"/>  
      </namespaces>
    </pages>
  </system.web.webPages.razor>

  <system.web>
    <httpHandlers>
      <add path="*" verb="*" type="System.Web.HttpNotFoundHandler"/>
    </httpHandlers>

    <!--
        Enabling request validation in view pages would cause validation to occur
        after the input has already been processed by the controller. By default
        MVC performs request validation before a controller processes the input.
        To change this behavior apply the ValidateInputAttribute to a
        controller or action.
    -->
    <pages
        validateRequest="false"
        pageParserFilterType="System.Web.Mvc.ViewTypeParserFilter, System.Web.Mvc, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"
        pageBaseType="System.Web.Mvc.ViewPage, System.Web.Mvc, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"
        userControlBaseType="System.Web.Mvc.ViewUserControl, System.Web.Mvc, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35">
      <controls>
        <add assembly="System.Web.Mvc, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" namespace="System.Web.Mvc" tagPrefix="mvc" />
      </controls>
    </pages>
  </system.web>

  <system.webServer>
    <validation validateIntegratedModeConfiguration="false" />
   
    <handlers>
      <remove name="BlockViewHandler"/>
      <add name="BlockViewHandler" path="*" verb="*" preCondition="integratedMode" type="System.Web.HttpNotFoundHandler" />
    </handlers>
  </system.webServer>
</configuration>

[Jason]

Adding the using statement worked for me.
Thanks!

[Manoj Sharma*]

Solution

Add the following namespace entry to web.config in "Views" folder and it will work without @using statement
<add namespace="Telerik.Web.Mvc.UI" />

 

 

 

 

 

(doesn't work if you add namespace to main web.config)

[Keith]

I added the namespace in the web.config under the Views folder and it did actually attempt to render the control, now, the stylesheets aren't loading I believe.  I could not find any documentation on how to get started with MVC3/Razor.  Any chance for a link to some decent setup documentation?

EDIT:
I added the Telerik extensions via NuGet and everything works fine :)

[Sid]

I added the namespace in the Views/Shared web.config file, and my using statement still gives the error The Type Or Namespace Telerik could not be found.  How should this be rectified?

[T. Tsonev]

Hello Sid,

Please make sure you add the namespace in the Views/web.config file, not Views/Shared/web.config

I hope this helps.

Regards,
Tsvetomir Tsonev
the Telerik team

[Sid]

Hi,

The MenuPartial.cshtml is located in Views/Shared.  I modified the web.config in the Views as well as under the main project.  Unfrotunately, I'm still unable to call the using statement.  Is there a better location to place the MenuPartial.cshtml instead of in the shared directory?  It's going to be used in the master page etc.

Thanks,
Sid

[T. Tsonev]

Hello Sid,

The location of the view shouldn't matter as long as it in the Views folder and not in a separate Area. Can you please send us a stripped-down version of your project so we can debug it locally.

Greetings,
Tsvetomir Tsonev
the Telerik team

[Sid]

Hi,

This issue is now resolved after building the solution. 

Thanks,
Sid

[Steven]

Try this in your web.config:

<system.web.webPages.razor>
    <host factoryType="System.Web.Mvc.MvcWebRazorHostFactory, System.Web.Mvc, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
    <pages pageBaseType="System.Web.Mvc.WebViewPage">
        <namespaces>
            <add namespace="System.Web.Helpers" />
            <add namespace="System.Web.Mvc" />
            <add namespace="System.Web.Mvc.Ajax" />
            <add namespace="System.Web.Mvc.Html" />
            <add namespace="System.Web.Routing" />
            <add namespace="System.Web.WebPages" />
            <add namespace="Telerik.Web.Mvc.UI" />
            <add namespace="Telerik.Web.Mvc.Configuration"/>
        </namespaces>
    </pages>
</system.web.webPages.razor>

[David]

Please ignore, I replied to the wrong comment.

[Douglas]

this fix did not work for me

[Sree]

Hi Telerik Team,
I wanted to use cascade combo box in my project. I am not able to get the method "cascadeto" for combobox.It showing error
"Telerik.Web.Mvc.UI.Fluent.DropDownListBuilder' does not contain a definition for 'CascadeTo' and no extension method 'CascadeTo' accepting a first argument of type 'Telerik.Web.Mvc.UI.Fluent.DropDownListBuilder' could be found (are you missing a using directive or an assembly reference?)"

My Telerik.web.mvc dll version id "2011.2.712.340"..What shall I do now. Shall I use 2012 build. I was not able to down load even trial version of 2012 from ur site.

Thank you,
sree
MyEmail:[e-mail]