.Net中访问Excel

http://msdn.microsoft.com/en-us/library/aa188489.aspx

通过COM
http://support.microsoft.com/default.aspx?scid=kb;EN-US;Q302084
http://support.microsoft.com/default.aspx?scid=kb;EN-US;Q302815
http://topic.csdn.net/t/20020609/21/790517.html

通过ADO.NET
http://support.microsoft.com/default.aspx?scid=kb;zh-cn;257819
http://www.cnblogs.com/Jinglecat/archive/2006/08/15/477472.html
http://www.cnblogs.com/Jinglecat/archive/2006/08/26/487167.html
http://voboy.blog.ccidnet.com/blog-htm-itemid-322529-uid-4802-do-showone-type-blog.html