Third party Export not working on Item Command event

[Naresh Goradara]

Hi,
I am using Q1 2010 AJAX ASP.Net controls for development.

I have one RadGrid placed on page, and on ItemCommand event i am exporting crystal report to pdf (working with response) then it gives me an error like:
{Unable to evaluate expression because the code is optimized or a native frame is on top of the call stack.}

One thing to be note is that same is working on any event of asp control.
This happens when I use RadAjaxManager in my page.
My code for same is as below:

// Get the report document
        CrystalDecisions.CrystalReports.Engine.ReportDocument repDoc = GetReportDocument();
        // Stop buffering the response
        Response.Buffer = false;
        // Clear the response content and headers
        Response.ClearContent();
        Response.ClearHeaders();
        try
        {
            repDoc.ExportToHttpResponse(CrystalDecisions.Shared.ExportFormatType.PortableDocFormat, Response, false, "Invoice");

        }
        catch (System.Threading.ThreadAbortException ex1)
        {
            ex1 = null;
            Response.End();
        }
        catch (Exception ex)
        {
            ex = null;
        }
        finally
        {
        }

Please suggest to overcome this issue.

With Regards,
Naresh Goradara

[Tsvetina]

Hi Naresh,

You need to make sure that AJAX is turned off while exporting is taking place, because the grid prepares additional information when performing export operation. This information cannot be passed through the XMLHttpObject used for AJAX requests. Here is a link to a help topic with tips on how to turn AJAX off while exporting.

Kind regards,
Tsvetina
the Telerik team