Hi Telerik,
I have been used Telerik RadChart Q1 2010 on SharePoint 2007 successfully. But, now I use Telerik RadChart Q1 2010 on SharePoint 2010, I get the following error message
The ... Web Part appears to be causing a problem. Session state can only be used when enableSessionState is set to true, either in a configuration file or in the Page directive. Please also make sure that System.Web.SessionStateModule or a custom session state module is included in the <configuration>\<system.web>\<httpModules> section in the application configuration.
I modified my web.config as what the error say, but it doesn't help. Here is my web.config:
...
...
...
<httpHandlers>
<add path="ChartImage.axd" verb="*" type="Telerik.Web.UI.ChartHttpHandler, Telerik.Web.UI, Version=2010.1.415.35, Culture=neutral, PublicKeyToken=121fae78165ba3d4" validate="false" />
<add path="ChartImage.axd" type="Telerik.Web.UI.ChartHttpHandler" verb="*" validate="false"/>
</httpHandlers>
...
...
...
<httpModules>
<add name="ScriptModule" type="System.Web.Handlers.ScriptModule, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
<add name="Session" type="System.Web.SessionState.SessionStateModule"/>
</httpModules>
...
...
...
<pages enableSessionState="true" enableViewState="true" enableViewStateMac="true" validateRequest="false" pageParserFilterType="Microsoft.SharePoint.ApplicationRuntime.SPPageParserFilter, Microsoft.SharePoint, Version=14.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c" asyncTimeout="7">
I render the RadChart directly on the Page, It means Page.Controls.Add(radChart). I know I can render RadChart's Image, but it doesn't meet my requirement
So, anybody please help me to solve this problem
Thanks
Cam Mach
Bamboo Solutions Corporation
7 Answers, 1 is accepted
Rank 1
Any body, please help. It's urgent
Thanks
Cam Mach
Bamboo Solutions Corporation
By default RadChart requires session state and it seems it is disabled in this case, which causes the problem. Fortunately, RadChart can run without session state, you can find more details in our help topic - http://www.telerik.com/help/aspnet-ajax/advancedsession.html.
Also something to have in mind - please use the Smart Tag of RadChart to automatically register an HTTP handler in the web config file to render the chart as it will avoid many troubles. This is shown here - http://www.telerik.com/help/aspnet-ajax/gettingstartedstaticdata.html (point 4).
Regards,
Evgenia
the Telerik team
Rank 1
Hello Evgenia,
Now I set UseSession to false, and create temporary folder for the chart image, but it appears to have a little red "X" on my web part. I go to the temporary folder and see my chart there, but why it doesn't show on my page instead the red "X".
Have I missed something? Please help
Thanks,
Peter
Bamboo Solutions Corporation
Rank 1
Hi Telerik,
Anybody please help me. I am in a hurry.
By the way, how can I get the Image Map info after rendering RadChart?
Thanks in advance,
Cam Mach
Bamboo Solutions Corporation
Please take a look at this forum post - http://www.telerik.com/community/forums/aspnet-ajax/chart/using-radchart-in-sharepoint-2010.aspx.
Another possible cause would be an URL rewriter. In this case, the http handler request might not be the correct one. You can check this forum post for more details.
As for your newest question - to get the Image Map info of the Chart - open View Source of the generated Browser's page with the Chart and look for
<map id='imRadChart1' name='imRadChart1'> I hope this will help you.
Kind regards,
Evgenia
the Telerik team
Rank 1
Thank Evgenia so much!
Now It help. Actually I am using IIS7 on Window Server 2008, that's why I always get trouble with rendering RadChart.
But now, everything is fine.
Again, Thanks Evgenia
Cam Mach
Bamboo Solutions Corporation
Rank 1
If you add that entry, directly, by modifing web.config. Then it does not work.
Actully, IIS content view adds entry in " <system.webServer>" for HttpHandler.
Thanks
Savan