C#等操作Excel文件的强大的免费库
经过对比 EEplus比较好用
从Book，Sheet，Cell各方面都可以灵活操作
颜色，线，单元格各种格式都可以很好的控制(C# and other powerful libraries for operating Excel files
By comparison, EEplus is easier to use
From Book, Sheet, Cell can flexibly operate in all aspects
Colors, lines, cells, and various formats can be well controlled)