CSV : Is a raw data format.. It does NOT have ANY commands that can be placed in it...
EXCEL : has limits... Noticably - 255 columbs and 65535 rows... (per sheet) more specifically in Hex it has HFF col & HFFFF rows...
Yes , I tried, you all are correct.
What i was trying to do is export data in .CSV that the client user will be able to open it in Excel if he has or Open Office if he has. Then the Multiple Sheets problem Occured.


I was mistaking CSV files but as said by GremlinSA .CSV is a raw data format.

Thanks a lot for the HELP for now I know that it is not possible with .CSV files


I think now I should export limited records and let the user do the management of the sheets.

Thank you all !!!!