I have the following configuration, but I have not able to find any documentation on how to set a maximum backup files on date rolling style. I know that you can do this with size rolling style by using the maxSizeRollBackups.
<appender name="AppLogFileAppender" type="log4net.Appender.RollingFileAppender">
<file value="mylog.log" />
<appendToFile value="true" />
<lockingModel type="log4net.Appender.FileAppender+MinimalLock" />
<rollingStyle value="Date" />
<datePattern value=".yyMMdd.'log'" />
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%d %-5p %c - %m%n" />
</layout>
</appender>
You can't.
from
log4net SDK Reference
RollingFileAppender Class
CAUTION
A maximum number of backup files when rolling on date/time boundaries is not supported.