Example of File and Folder structure   └───2018     └───May-2018_logfile.log     └─── Jun-2018_logfile.log     └───Jul-2018_logfile.log      └───Aug-2018_logfile.log     Log4net.config configuration example   <log4net>  <appender name="LogFileAppender" type="log4net.Appender.RollingFileAppender, log4net">   <file type="log4net.Util.PatternString" value="C:/logs/log4netLogs/%date{yyyy}/" />   <appendToFile value="true" />   <rollingStyle value="Date" />   <staticLogFileName value="false" />   <datePattern value="MMM-yyyy'_logfile.log'" />   <layout type="log4net.Layout.PatternLayout">     <conversionPattern value="%date [%thread] %-5level %logger %M - %message%newline%newline" />   </layout> </appender>   <logger name="File">     <level value="All" />     <appender-ref ref="...