Radgrid export exception

[Jeroen Eikmans]

Hi,

we have a radgrid with paging enabled, advanced databinding using the NeedDataSource event and filtering enabled on a column.

When we call MasterTableView.ExportToExcel() we're getting the following error :
[NullReferenceException: Object reference not set to an instance of an object.]
   Telerik.Web.UI.RadAjaxControl.OnPagePreRenderComplete(Object sender, EventArgs e) +83
   System.EventHandler.Invoke(Object sender, EventArgs e) +0
   System.Web.UI.Page.OnPreRenderComplete(EventArgs e) +8699938
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1029

The ExportSettings.IgnorePaging is set to true. When i change that to false the export does work.
I've read a thread on this forum and the answer to this problem was to use advanced-binding but we're already using that.
We're using Telerik.web.dll 2010.1.519.35

[Daniel]

Hello Roel,

Can you isolate the problem in a simple, runnable demo so that we can debug it on our end?

Regards,
Daniel
the Telerik team

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[Paul]

I have the identical problem.  I was getting the exception but when I turned IgnorePaging to False it worked without error.  Unfortunately I have no simple example because the page is complex.  Any clues?

Thanks,

Paul.

[Daniel]

Hello Paul,

I guess this is a databinding issue, however it is hard to provide to-the-point solution based on the available information. Do you use advanced data-binding? If this is so, please try (for testing purposes) to put a regular ASP.NET button on your page and manually rebind (RadGrid1.Rebind()) RadGrid in its click handler.

Regards,
Daniel
the Telerik team