Pdf export BUG

[Pierre]

Hi,

I have encounter a new bug with my export pdf.
It was working in 2016 R2 SP1. I was in 2016 R3 when we discovert it first and upgrading to SP1 and SP2 didn't fix it.

So i have a function in code behind that process a predefined telerik report and send it via 'Response'.

protected void ExportButton(object sender, EventArgs e)
 {
    // [...] HiddenCode [...]

    ReportProcessor reportProcessor = new ReportProcessor();
    Telerik.Reporting.InstanceReportSource instanceReportSource = new Telerik.Reporting.InstanceReportSource();
    instanceReportSource.ReportDocument = rpt;
    RenderingResult result = reportProcessor.RenderReport("PDF", instanceReportSource, null);
    string fileName = doc + "." + result.Extension;
    Response.Clear();
    Response.ContentType = result.MimeType;
    Response.Cache.SetCacheability(HttpCacheability.Private);
    Response.Expires = -1;
    Response.Buffer = true;
    Response.AddHeader("Content-Disposition"
                            , string.Format("{0};FileName=\"{1}\""
                                            , "attachment"
                                            , fileName)     );
    Response.BinaryWrite(result.DocumentBytes);
    Response.End();
}

 

If i have a RadButton outside of the grid calling this it works. When the button is in the CommandItemTemplate I get Nothing.
Or i get just some server lag.. sometimes a js unnamed error. and that on every Browser.

[Pierre]

A simple we can not reproduce your issue would have been great.
Instead of just ignoring it.

[Stef]

Hi Pierre,

I guess this is an AJAX issue. The documents bytes should be returned via postback. Callbacks will not let you download the attachment at the client without refreshing the whole page.
Instead you can try returning an anchor tag - link, to the file in the server.

If it is an emergency, please use the support ticketing system. Replies by Telerik representatives in forums, in a timely manner are not guaranteed.
Thank you for your understanding.

Regards,
Stef
Telerik by Progress