Question

I’m attempting to use log4net. When I fire up the app it creates the log file, but no matter how many times I call Log.Info("Application Started"); it remains empty. I’ve researched the first two pages that google returns and my code seems to match all examples.

Code:

[assembly: XmlConfigurator(Watch = true)]

namespace Generator
{
     public class Run
     {

       private static readonly log4net.ILog Log =
       log4net.LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);

        public List<BILL_RUN> PerformBillRun()
        {
             XmlConfigurator.Configure();

             Log.Info("Application Started");
             var enabled = Log.IsInfoEnabled; //This is true
        }

     }

}

app.config

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

  <log4net>
    <appender name="FileAppender" type="log4net.Appender.FileAppender">
      <file value="log-files.txt" />
      <appendToFile value="true" />
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline" />
      </layout>
    </appender>

    <root>
      <level value="All" />
      <appender-ref ref="FileAppender" />
    </root>
  </log4net>

Any pointers as to what may be wrong?

Answer 1

This always happens to me…as soon as I post the question.

It turns out my <configSections></configSections> tags weren’t directly a child to <configuration> meaning that the config wouldn’t be picked up (I assume), and because log4net swallows all exceptions this only manifested itself further into my app.

Logging is working fine now.