Export data as Excel file from ASP.NET

Question

I have data like below

AAAAAA
BBBBBB
CCCCCC
DDDDDD
EEEEEE

Now there is a button on the page, and when I click the button, the browser would

Answer 1

NPOI is an open source project which can help you read/write xls, doc, ppt files.

Very simple and give right Excel format.