最简单的Log4Net配置

1. 添加log4net.dll的引用
2. 在项目的Properties/AssemblyInfo.cs中添加:
   [assembly: log4net.Config.XmlConfigurator()]
3. 在入口Assembly中至少调用一次LoggerManager.GetLogger()
4. App.config例子
   Code
   <?xml version="1.0" encoding="utf-8" ?>
   <configuration>
       <configSections>
           <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net"/>
       </configSections>
   
       <!-- log4net internal messages -->
       <appSettings>
           <add key="log4net.Internal.Debug" value="true"/>
       </appSettings>
   
       <log4net>
           <root>
               <level value="ALL" />
               <appender-ref ref="ConsoleAppender" />
               <appender-ref ref="FileAppender" />
           </root>
   
           <appender name="ConsoleAppender" type="log4net.Appender.ConsoleAppender" >
               <layout type="log4net.Layout.PatternLayout">
                   <param name="ConversionPattern" value="[SimpleAppConfig] %date [%thread] %-5level %logger - %message%newline" />
               </layout>
           </appender>
   
           <appender name="FileAppender" type="log4net.Appender.FileAppender">
               <file value="log-file.txt" />
               <appendToFile value="true" />
               <lockingModel type="log4net.Appender.FileAppender+MinimalLock" />
               <layout type="log4net.Layout.PatternLayout">
                   <conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline" />
               </layout>
           </appender>
   
       </log4net>
   </configuration>
   
5. 在代码中使用

   private static ILog Logger = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
   
       if(logger.IsDebugEnabled)
   
       {
   
            Logger.DebugFormat("{0} - {1}", MethodBase.GetCurrentMethod(), "Init");
   
       }
   
      

Code snippet for log4net