作者：敖士伟
一、项目中引用log4net.dll
二、AssemblyInfo.cs中加入：
[assembly:log4net.Config.DOMConfigurator(ConfigFile="log4net.xml", Watch=true)]
说明：指明log4net.xml配置文件
三、代码中使用Log4net
using log4net;
ILog log = LogManager.GetLogger("log4net");
log.Info("It's OK!");
附：log4net.xml （简单使用不需改动）
<?xml version="1.0" encoding="utf-8" ?>
<log4net>
<root>
<level value="ALL" />
<appender-ref ref="rollingFile" />
</root>
<appender name="rollingFile" type="log4net.Appender.RollingFileAppender,log4net" >
<param name="File" value="log.txt" />
<param name="AppendToFile" value="true" />
<param name="RollingStyle" value="Date" />
<param name="DatePattern" value="yyyy.MM.dd" />
<param name="StaticLogFileName" value="true" />
<layout type="log4net.Layout.PatternLayout,log4net">
<param name="ConversionPattern" value="%d [%t] %-5p %c - %m%n" />
<param name="Header" value=" ----------------------header-------------------------- " />
<param name="Footer" value=" ----------------------footer-------------------------- " />
</layout>
</appender>
<appender name="consoleApp" type="log4net.Appender.ConsoleAppender,log4net">
<layout type="log4net.Layout.PatternLayout,log4net">
<param name="ConversionPattern" value="%d [%t] %-5p %c - %m%n" />
</layout>
</appender>
<logger name="Log4Net.ProLog">
<level value="DEBUG" />
<appender-ref ref="rollingFile" />
<appender-ref ref="coloredConsoleApp" />
<appender-ref ref="SystemEvent" />
</logger>
</log4net>
