Page request Mnager exception

[jincy]

Hi,

I am using RadGrid and it was working fine, but from yesterday I am getting an error like this "Sys.WebForms.PageRequestManagerServerErrorException: An unknown error occurred while processing the request on the server." I am getting this when I expand to see the child grid and afterwards when I am contracting that. I ahd put EnablePartialrendering=true on script manager. I tried with setting false also but then I am getting this same error on load of grid itself. Can any one help??

[Princy]

Hi Jincy,

I found two forum links which discuss a similar error. Probably, you can find some clue in these.
PageRequestManagerServerErrorException on Grouping
SelectedIndexChanged not firing +error

Princy.

[jincy]

Hi princy,

As said in one of the forums, I changed to EnablePartialRendering=false. But now on th eload of that page which containsgrid I am getting this error "Sys.WebForms.PageRequestManager' is null or not an object" .

Regards,
Jincy

[Martin]

I am having a similar problem with RadAjax and RadScriptManager and the 3.5 ReportViewer control.  

Setting 
    RadScriptManager1.EnablePartialRendering = false;

results in: 

Microsoft JScript runtime error: 'Sys.WebForms.PageRequestManager' is null or not an object


setting it to true regardles of wethere the ajax panel is enabled results in:

Microsoft JScript runtime error: 'this._postBackSettings.async' is null or not an object



I have the latest telerik.

Thanks

[Sebastian]

Hello Martin,

Can you please check whether the second error appear if you set EnableAJAX = false for your RadAjaxPanel (wrapping the ReportViewer control) or replace it with standard MS UpdatePanel instance? If the problem persists, I suppose that the ReportViewer is somehow not compatible with the ASP.NET AJAX framework and you will need to find a method to bypass the limitation searching in the ASP.NET AJAX forums.

Once you make the configuration fully operational, re-enable the ajax for the RadAjaxPanel and you should be done.

Kind regards,
Stephen
the Telerik team

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[Jack Voss]

I am getting the same error when I simply added the script manager to my form:

Microsoft JScript runtime error: 'Sys.WebForms.PageRequestManager' is null or not an object

If I find a solution I will post it here.