This project is the .NET port of POI project at http://poi.apache.org/. POI is an open source java project

which can help you read/write xls, doc, ppt files. It has a wide application.

For example, you can use it a 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).