This project is the .NET version of POI Java project at http://poi.apache.org/. POI is an open source project which can help you read/write xls, doc, ppt files. It has a wide application. For example, you can use it to generate a Excel report without Microsoft Office suite installed on your server and more efficient than call Microsoft Excel ActiveX at background; you can also use it to extract text from Office documents to help you implement full-text indexing feature (most of time this feature is used to create search engines).

Professional Service
NPOI team provides commercial consulting service(non-free) for you. We can provide customized development, urgent bug fix, 1:1 consulting (online), Q&A for anything related to NPOI. For detail price, please contact Tony Qu via tonyqus (at) gmail.com.

Why choose NPOI
Creating Excel spreadsheets .XLS and .XLSX in C# by Leniel Macaferi Great thanks to Leniel Macaferi for giving us a good case of why choose NPOI.
在 Server 端存取 Excel 檔案的利器：NPOI Library(Traditional Chinese) NPOI is introduced on MSDN of Microsoft Taiwan

NPOI 1.2.4 (Chinese)新教程地址：http://tonyqus.sinaapp.com

Donate NPOI
支付宝捐款：http://me.alipay.com/tonyqus

NPOI on SNS
QQ群: 124527967, 116053476, 189925337
Twitter: http://twitter.com/tonyqus
新浪微博: http://t.sina.com.cn/npoi

System Requirement
VS2005 or VS2008 with .NET 2.0 Runtime (SP1)
vs2003 with .NET 1.1
medium trust environment in ASP.NET