https://github.com/closedxml/closedxml
ClosedXML is a .NET library for reading, manipulating and writing Excel 2007+ (.xlsx, .xlsm) files. It aims to provide an intuitive and user-friendly interface to dealing with the underlying OpenXML API.
OpenXML を簡単にする ClosedXML
https://www.infoq.com/jp/news/2011/07/ClosedXML
このライブラリを紹介するため，ClosedXML プロジェクトの Manuel De Leon 氏に話を聞いた。
