Log4net rolling daily filename with date in the fi

Question

I would like to have files named for example:

dd.mm.yyyy.log

How is this possible with log4net?

Answer 1

Using Log4Net 1.2.13 we use the following configuration settings to allow date time in the file name.

<file type="log4net.Util.PatternString" value="E:/logname-%utcdate{yyyy-MM-dd}.txt" />

Which will provide files in the following convention: logname-2015-04-17.txt

With this it's usually best to have the following to ensure you're holding 1 log per day.

<rollingStyle value="Date" />
<datePattern value="yyyyMMdd" />

If size of file is a concern the following allows 500 files of 5MB in size until a new day spawns. CountDirection allows Ascending or Descending numbering of files which are no longer current.

 <maxSizeRollBackups value="500" />
 <maximumFileSize value="5MB" />
 <rollingStyle value="Composite" />
 <datePattern value="yyyyMMdd" />
 <CountDirection value="1"/>
 <staticLogFileName value="true" />

Answer 2

To preserve file extension:

<log4net>
    <root>
      <level value="DEBUG"/>
      <appender-ref ref="RollingLogFileAppender"/>
    </root>
    <appender name="RollingLogFileAppender" type="log4net.Appender.RollingFileAppender">
      <file type="log4net.Util.PatternString" value="D:\\LogFolder\\%date{yyyyMM}\\SchT.log" />
      <appendToFile value="true" />
      <rollingStyle value="Date" />
      <maximumFileSize value="30MB" />
      <staticLogFileName value="true" />
      <preserveLogFileNameExtension value="true"/>
      <datePattern value="ddMMyyyy" />
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%date [%thread] %-5level %logger - %message%newline" />
      </layout>
    </appender>
  </log4net>