log4net rolling log file config

log4net.config

<!-- Don't forget to add the following to app start-up:  log4net.Config.XmlConfigurator.Configure();  -->

 <log4net>
    <appender name="LogFileAppender" type="log4net.Appender.RollingFileAppender">
      <file type="log4net.Util.PatternString" value="..\\..\\logs\\logfilename.log" />
      <appendToFile value="true" />
      <maxSizeRollBackups value="-1" />
      <countDirection value="1" />
      <maximumFileSize value="10MB" />
      <rollingStyle value="Composite" />
      <preserveLogFileNameExtension value="true" />
      <staticLogFileName value="false" />
      <lockingModel type="log4net.Appender.FileAppender+MinimalLock" />
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%date %-5level [%thread] %logger - %message%newline%exception" />
      </layout>
    </appender>
    <root>
      <level value="ALL" />
      <appender-ref ref="LogFileAppender" />
    </root>
  </log4net>