Error loading RadChart image

[Alex Tushinsky]

I am using the Telerik RadChart (Q3 2009) with a DotNetNuke installation (5.1.4), in a custom module.  Everything has been working fine, but today I noticed that I'm getting a "Error loading RadChart Image" error message on my module.  I have both a development and a prod environment.  Development is a Windows 2008 R2 server (IIS 7.5), and Prod is a Windows 2003 (IIS 6) box.  The web.config files are identical, and everything works fine in dev, but not in prod (as is always the case).

In <system.webserver> <handlers>, I have:

<add name="ChartImage_axd" verb="*" preCondition="integratedMode" path="../../ChartImage.axd" type="Telerik.Web.UI.ChartHttpHandler" />

and also tried <add name="ChartImage_axd" verb="*" preCondition="integratedMode" path="ChartImage.axd" type="Telerik.Web.UI.ChartHttpHandler" />  

and in <system.web> I have:

<add path="ChartImage.axd" verb="*" type="Telerik.Web.UI.ChartHttpHandler, Telerik.Web.UI, Culture=neutral, PublicKeyToken=121fae78165ba3d4" validate="false" />

In my code, I also have a line that reads: RadChart1.HttpHandlerUrl = ResolveUrl("ChartImage.axd")

and I've also tried setting UseSession to false, and setting a temporary folder.  This produced exactly the same results, however, I did see the chart images being created in my temp folder.

I'm not sure what I'm missing.. any help is greatly appreciated!

[Bartholomeo Rocca]

Hello Alex,

This certainly looks like a problem related to incorrect configuration of the ChartHttpHandler in the web.config -- I noticed that in your system.webserver / handlers section the path attribute looks like path="../../ChartImage.axd" while in the system.web it looks like path="ChartImage.axd".

I believe it should be declared in the same way in both sections as it seems your development environment uses IIS7 (webserver section configuration) while your production environment uses IIS6 (system.web section configuration)

 
Greetings,
Bart.

[Alex Tushinsky]

As it turns out, there were two problems.  One was the difference in the paths between <system.web> and <system.webserver> of web.config, and the second was a re-direct configuration setup within DotNetNuke.  As a result, chartimage.axd never had a chance to be loaded.  Straightened out both issues, and now everything works as expected!

[Joseph]

Hi,

I am having the same issue with the RadChart that opens in a RadWindow inside DNN.  I was able to update my web.config file, but I am still having the issue of the chart not showing.

Alex - in your post you mentioned "the second was a re-direct configuration setup within DotNetNuke"

Can you tell me what configuration setting you had to change?

Thanks,
Joe

[Ves]

Hello Joe,

You can find this discussed in this forum thread.

Kind regards,
Ves
the Telerik team

[Chakrapani]

Hi im also facing sme problem and my web.config handlers are listed below.

   <httpHandlers>     
      <add verb="*" path="ChartImage.axd" type="Telerik.Web.UI.ChartHttpHandler, Telerik.Web.UI, Culture=neutral, PublicKeyToken=121fae78165ba3d4" validate="false" />
      <add path="Telerik.Web.UI.DialogHandler.aspx" type="Telerik.Web.UI.DialogHandler" verb="*" validate="false" />
      <add path="Telerik.Web.UI.SpellCheckHandler.axd" type="Telerik.Web.UI.SpellCheckHandler" verb="*" validate="false" />
      <add path="Telerik.Web.UI.WebResource.axd" type="Telerik.Web.UI.WebResource" verb="*" validate="false" />
    </httpHandlers>   
  </system.web>
  <system.webServer>