unrecognized tag prefix or device filter 'telerik'

[anitha]

hi,
   how to resolve this error   " unrecognized tag prefix or device filter 'telerik' "

Thanks in advance

[Paul]

Hi anitha,

In order to fix that issue you will have to put Telerik.Charting.dll in the application's BIN folder.

All the best,
Paul
the Telerik team

Check out Telerik Trainer, the state of the art learning tool for Telerik products.

[anitha]

hi,
    Thanks for ur reply. I have put Telerik.Charting.dll in bin folder but still i am getting the same error. Any other solution.

Thanks in advance

[Dhawal]

try to register it on your .aspx page like this:

<%@ Register TagPrefix="telerik" Namespace="Telerik.Web.UI" Assembly="Telerik.Web.UI" %>

[Jaymie]

there appears to be no Telerik.Charting.dll with the 2009.3.1016 release, is this intended or is there something I have not installed? (I selected the .net 3.5 installation and nothing else.

[Bartholomeo Rocca]

Hello Jaymie,

Telerik have IL merged the charting assembly into the main Telerik.Web.UI assembly -- check this blog post here http://blogs.telerik.com/vesselingeorgiev/posts/08-10-17/telerik_charting_in_radcontrols_for_asp_net_ajax_q3_2008.aspx.

Both register directives on the ASPX page should now point to the Telerik.Web.UI assembly.


Greetings,
Bart.

[Zÿm]

Hi,

 I got the same problem in 2011.3.1115.40 version of Telerik.Web.UI;

I coppied Telerik.Web.Ui.dll to Visual studios private assemblies (not sure if this is necessary).
My bin directroy contains this dll.

<pages theme="Default">
   <controls>
     <add tagPrefix="telerik" namespace="Telerik.Web.UI" assembly="Telerik.Web.UI" />
   </controls>
 </pages>

and i got this declared as it is described in troubleshouter

<add name="Telerik.Web.UI.WebResource"  path="Telerik.Web.UI.WebResource.axd" verb="*" type="Telerik.Web.UI.WebResource, Telerik.Web.UI, Version=2011.3.1115.40, Culture=neutral, PublicKeyToken=121fae78165ba3d4" />

whats wrong?


I tried with new solution, and with these settings works fine. I don't get it.

[Zÿm]

Ok, found the answear. The Telerik.Web.Desing was of older version than Telerik.Web.UI;
In short, version mismatch in Telerik.Web.*.dll.
Still i am getting errors in Design View

[Giuseppe]

Hi there,

Some of the core chart classes are placed in the Telerik.Charting namespace so you need to add one additional namespace mapping in your web.config:

<pages theme="Default">
  <controls>
    <add tagPrefix="telerik" namespace="Telerik.Web.UI" assembly="Telerik.Web.UI" />
    <add tagPrefix="telerik" namespace="Telerik.Charting" assembly="Telerik.Web.UI" />
  </controls>
</pages>

Regards,
Giuseppe
the Telerik team

Check out Telerik Trainer, the state of the art learning tool for Telerik products.

[Zÿm]

Ok thanks, i already read about this looking for solution, i don't use it, but will be aware of this. Cheers!