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To Export to Excel we use

1)for Excel 2003
Response.ContentType = "application/";

what is Response.ContentType for Excel 2007.

The content type for .xlsx files is;
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response.ContentType = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";
response.AppendHeader("content-disposition";, "attachment;filename=Product_Report.xls";);

I was suffered with same problem...and found the above solution.
You should try it
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CHill60 25-Jun-13 7:27am    
Quote - "You should try it" ... I suspect he did as the question is over 3 years old and Rod Kemp provided the answer in Solution 2 above

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