New Post: Howto GUIDE to add NPOI

Hello all.

Im using NPOI 1.2.3 with Visual Studio 2008
and 3.5 NET framework
and it works with xls files.

But does not recognice xlsm files:

"The supplied data appears to be in the Office 2007+ XML. POI only supports OLE2 Office documents"

I downloaded NPOI 2.1.1 but cannot add it to my project.

https://www.dropbox.com/s/zds3qi7g7nb0ihp/Capturado.jpg

Helpme please....

Thanks