http://www.cnblogs.com/*s-dotnet/archive/2011/01/16/1936871.html
http://club.excelhome.net/thread-674732-1-1.html
http://www.cnblogs.com/yangecnu/p/Excel-User-Define-Function-Introduce.html
http://www.cnblogs.com/*s-dotnet/archive/2011/01/16/1936871.html
http://club.excelhome.net/thread-674732-1-1.html
http://www.cnblogs.com/yangecnu/p/Excel-User-Define-Function-Introduce.html