log4net资料收集
Log4net 日志使用介绍
http://www.cnblogs.com/jys509/p/4699813.html
log4net Tutorial
http://www.codeproject.com/Articles/140911/log4net-Tutorial
Log4Net Troubleshooting
http://haacked.com/archive/2006/09/27/Log4Net_Troubleshooting.aspx/
Moving your Log4Net configuration out of web.config with ASP.NET 2.0 web sites.
http://geekswithblogs.net/bsherwin/archive/2008/02/15/119657.aspx