asp.net - Export Repeater to excel -

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i trying export repeater excel , here code...

    stringwriter sw = new stringwriter();     htmltextwriter htw = new htmltextwriter(sw);     string attachment = "attachment; filename=file.xls";     response.clearcontent();     response.addheader("content-disposition", attachment);     response.contenttype = "application/vnd.ms-excel";     rpt.rendercontrol(htw);     response.write(sw.tostring());     response.flush();     response.end();

when trying open file getting error

the file trying open, 'file.xls', in different format specified    file extension. verify file not corrupted , trusted  source   before opening file. want open file now? yes   no option available

what's wrong in code or have resolve issue. thanks

you setting content type application/vnd.ms-excel sending html contents in response stream when call rendercontents method. might need library generate excel files.


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