1. 首先下载log4net.dll文件。
2. 将 \bin\net\4.0\release\log4net.dll 复制到你的项目中 。
3. 将log4net.dll 添加引用到你的项目中。
4.在Web.Config （或App.Config）添加配置。（在项目中创建一个新的log4net的配置文件Log4Net.config）
<?xml version="1.0" encoding="utf-8" ?> ?<configuration> ???<configSections> ?????<section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler,log4net" /> ???</configSections> ?<log4net> ???<!-- OFF, FATAL, ERROR, WARN, INFO, DEBUG, ALL --> ???<!-- Set root logger level to ERROR and its appenders --> ???<root> ?????<level value="ALL"/> ?????<appender-ref ref="SysAppender"/> ???</root> ???<!-- Print only messages of level DEBUG or above in the packages --> ???<logger name="WebLogger"> ?????<level value="DEBUG"/> ???</logger> ???<appender name="SysAppender" type="log4net.Appender.RollingFileAppender,log4net" > ?????<param name="File" value="App_Data/" /> ?????<param name="AppendToFile" value="true" /> ?????<param name="RollingStyle" value="Date" /> ?????<param name="DatePattern" value=""Logs_"yyyyMMdd".txt"" /> ?????<param name="StaticLogFileName" value="false" /> ?????<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> ?</log4net>
Log4Net配置及使用
原文地址：https://www.cnblogs.com/luohao123/p/8910218.html