Export DataTable to Execl spreadsheet giving problem in .xlsx file

Question

Hi All,

I would like to Export the Data from the dataTable in asp.net application,

I am able to export the data to Excel .xls format but i am not able to open the excel spreadsheet format(.xlsx).

when i open its opening only ms Office Execl window but datais not displaying.


please hell its very urgent


Thanks
Bharathi