can not found npoi.xssf.usermodel

Question

I wanna use npoi to manipulate .xlsx files in VS2012/2010. To do so I should import NPOI.XSSF.UserModel, but when I add the npoi.dll and try to import that, there is no XSSF type of NPOI at Using part. I mean that there is no "Using NPOI.XSSF" Any help?

Answer 1

You need to include NPOI.OOXML.dll dll to use NPOI.XSSF.UserModel namespace