LOG4NET filename as datetime

  <configSections>
    <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net"/>
  </configSections>



  <log4net>
  <appender name="FileAppender" type="log4net.Appender.FileAppender">
    <file type="log4net.Util.PatternString" value="myPrefix%date{yyyyMMdd}.fileExtension" />

    <appendToFile value="true" />
    <layout type="log4net.Layout.PatternLayout">
      <conversionPattern value="%date [%thread] %-5level %logger [%ndc] - %message%newline"/>
    </layout>
  </appender>
  <root>
    <level value="All"/>
    <appender-ref ref="FileAppender"/>
  </root>
  </log4net>