Append current Date to Log file with Log4Net

Question

Hello,

All I want to do is append the current date and time to my log file, say:

"export_(Wed_Feb_21_2009_at_1_36_41PM)"

Here is my current config from my app.config

<appender name="RollingFileAppender" type="log4net.Appender.RollingFileAppender">
  <file value="c:\export.txt" />
  <appendToFile value="true" />
  <lockingModel type="log4net.Appender.FileAppender+MinimalLock" />
  <rollingStyle value="Size" />
  <maxSizeRollBackups value="10" />
  <layout type="log4net.Layout.PatternLayout">
   <conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message %stackTrace%newline" />
  </layout>
</appender>

Is appending the date to my log file possible, or is it one of those things I need to do in Code and not Config?

Answer 1

Use StaticLogFileName:

<param name="StaticLogFileName" value="true"/>

Answer 2

Add the following to your config file

<appender name="rollingFile" type="log4net.Appender.RollingFileAppender,log4net">
  <param name="File" value="c:\\ProjectX\\Log\\log.txt"/>
  <param name="AppendToFile" value="true"/>
  <lockingModel type="log4net.Appender.FileAppender+MinimalLock"/>
  <param name="RollingStyle" value="Date"/>
  <param name="DatePattern" value="yyyy.MM.dd"/>
  <param name="StaticLogFileName" value="true"/>
  <layout type="log4net.Layout.PatternLayout,log4net">
    <param name="ConversionPattern" value="%date [%thread] %-5level %logger - %message%newline"/>
  </layout>
</appender>

Answer 3

For those who are interested, here is the solution:

 <appender name="RollingFileAppender" type="log4net.Appender.RollingFileAppender">
  <param name="File" value="C:\\Users\\chris\\Documents\\log_.txt"/>
  <param name="RollingStyle" value="Date"/>
  <param name="DatePattern" value="_(yyyy.MM.dd-hh_mm_ss)"/>
  <param name="StaticLogFileName" value="false"/>
  <maximumFileSize value="100KB" />
  <appendToFile value="true" />
  <lockingModel type="log4net.Appender.FileAppender+MinimalLock" />   
  <layout type="log4net.Layout.PatternLayout">
   <conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message %stackTrace%newline" />
  </layout>
 </appender>

and the unit test which verifies this:

    [Test]
    public void TestLogger()
    {
        logger.Info("Start Log");

        for (int i = 0; i < 2500; i++)
        {
            logger.Info(i);
        }

        logger.Info("End Log Log");
    }

it produces the following output:

    log_.txt_(2009.02.19-01_16_34)

Not really what I wanted, but better than what I had before.