正则表达式

相关参教文献：

http://blog.csdn.net/laily/category/19548.aspx

http://jinesc.6600.org/myweb/disp.asp?idd=315&room=00

http://www.microsoft.com/china/msdn/library/webservices/asp.net/regexnet.mspx

http://search.csdn.net/Expert/topic/1930/1930163.xml?temp=.9488031