C#Log4Net使用

    public interface IBillLog
    {
        /// <summary>
        /// 记录登陆入单客户
        /// </summary>
        /// <param name="dateTime"></param>
        /// <param name="billOperator"></param>
       // int LogOperator(DateTime dateTime, BillOperator billOperator, EnumLogOperatorType logOperatorType);
        void Fatal(object message, Exception exception);
        void Error(object message, Exception exception);
        void Warn(object message, Exception exception);
        void Info(object message, Exception exception);
        void Debug(object message, Exception exception);

    }

   public class BillLog : IBillLog
    {
      
        private static ILog m_log = LogManager.GetLogger(typeof(BillLog));

        public BillLog() {  }
        #region 委托Log4net来实现不同日志级别打印
        void IBillLog.Fatal(object message, Exception exception)
        {
            m_log.Fatal(message, exception);
        }
        void IBillLog.Error(object message, Exception exception)
        {
            m_log.Error(message, exception);
        }
        void IBillLog.Warn(object message, Exception exception)
        {
            m_log.Warn(message, exception);
        }
        void IBillLog.Info(object message, Exception exception)
        {
            m_log.Info(message, exception);
        }
        void IBillLog.Debug(object message, Exception exception)
        {
            m_log.Debug(message, exception);
        } 
        #endregion
    }

AssemblyInfo.cs中增加

[assembly: log4net.Config.XmlConfigurator(ConfigFile = "log4net.config", Watch = true)]

log4net.config文件配置

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <configSections>
    <section name="log4net"
    type="log4net.Config.Log4NetConfigurationSectionHandler,
log4net-net-1.0"
/>
  </configSections>
  <log4net>
    <root>
      <level value="ALL" />
      <appender-ref ref="RollingFileAppenderFATAL" />
      <appender-ref ref="RollingFileAppenderERROR" />
      <appender-ref ref="RollingFileAppenderWARN" />
      <appender-ref ref="RollingFileAppenderINFO" />
      <appender-ref ref="RollingFileAppenderDEBUG" />
    </root>
    <!--ALL/FATAL > ERROR > WARN > INFO > DEBUG/OFF-->
    <appender name="RollingFileAppenderFATAL" type="log4net.Appender.RollingFileAppender" >
      <lockingModel type="log4net.Appender.FileAppender+MinimalLock" />
      <file value=".\\FatalDir\\Fatal"/>
      <staticLogFileName value="false"/>
      <appendToFile value="true"/>
      <rollingStyle value="Composite"/>
      <datePattern value="_yyyy.MM.dd&quot;.log&quot;"/>
      <maxSizeRollBackups value="20" />
      <maximumFileSize value="1024KB"/>
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline"/>
      </layout>
      <filter type="log4net.Filter.LevelRangeFilter">
        <param name="LevelMin" value="FATAL" />
        <param name="LevelMax" value="FATAL" />
      </filter>
    </appender>
   
 
    <appender name="RollingFileAppenderERROR" type="log4net.Appender.RollingFileAppender" >
      <lockingModel type="log4net.Appender.FileAppender+MinimalLock" />
      <file value=".\\ErrorDir\\Error"/>
      <staticLogFileName value="false"/>
      <appendToFile value="true"/>
      <rollingStyle value="Composite"/>
      <datePattern value="_yyyy.MM.dd&quot;.log&quot;"/>
      <maxSizeRollBackups value="20" />
      <maximumFileSize value="1024KB"/>
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline"/>
      </layout>
      <filter type="log4net.Filter.LevelRangeFilter">
        <param name="LevelMin" value="ERROR" />
        <param name="LevelMax" value="ERROR" />
      </filter>
    </appender>


     <appender name="RollingFileAppenderWARN" type="log4net.Appender.RollingFileAppender" >
      <lockingModel type="log4net.Appender.FileAppender+MinimalLock" />
      <file value=".\\WarnDir\\Warn"/>
      <staticLogFileName value="false"/>
      <appendToFile value="true"/>
      <rollingStyle value="Composite"/>
      <datePattern value="_yyyy.MM.dd&quot;.log&quot;"/>
      <maxSizeRollBackups value="20" />
      <maximumFileSize value="1024KB"/>
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline"/>
      </layout>
      <filter type="log4net.Filter.LevelRangeFilter">
        <param name="LevelMin" value="WARN" />
        <param name="LevelMax" value="WARN" />
      </filter>
    </appender>


    <appender name="RollingFileAppenderINFO" type="log4net.Appender.RollingFileAppender" >
      <lockingModel type="log4net.Appender.FileAppender+MinimalLock" />
      <file value=".\\InfoDir\\Info"/>
      <staticLogFileName value="false"/>
      <appendToFile value="true"/>
      <rollingStyle value="Composite"/>
      <datePattern value="_yyyy.MM.dd&quot;.log&quot;"/>
      <maxSizeRollBackups value="20" />
      <maximumFileSize value="1024KB"/>
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline"/>
      </layout>
      <filter type="log4net.Filter.LevelRangeFilter">
        <param name="LevelMin" value="INFO" />
        <param name="LevelMax" value="INFO" />
      </filter>
    </appender>


    <appender name="RollingFileAppenderDEBUG" type="log4net.Appender.RollingFileAppender" >
      <lockingModel type="log4net.Appender.FileAppender+MinimalLock" />
      <file value=".\\DebugDir\\Debug"/>
      <staticLogFileName value="false"/>
      <appendToFile value="true"/>
      <rollingStyle value="Composite"/>
      <datePattern value="_yyyy.MM.dd&quot;.log&quot;"/>
      <maxSizeRollBackups value="20" />
      <maximumFileSize value="1024KB"/>
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline"/>
      </layout>
      <filter type="log4net.Filter.LevelRangeFilter">
        <param name="LevelMin" value="DEBUG" />
        <param name="LevelMax" value="DEBUG" />
      </filter>
    </appender>
  </log4net>
</configuration>