How do I configure log4net so that log.IsDebugEnabled is true?

Question

I am trying to use log4net in an ASP.NET application with Visual Studio 2005. I have declared an instance of the logger like so:

Private Shared ReadOnly log As ILog = LogManager.GetLogger("")

I am trying to use it in the following manner:

If log.IsDebugEnabled Then
   log.Debug("Integration Services Constructed")
End If

Here is my configuration:

<log4net>

 <root>
  <level value="DEBUG" />
  <appender-ref ref="RollingFileAppender" />
 </root>

 <appender name="RollingFileAppender" type="log4net.Appender.RollingFileAppender">
  <file value="..\\logs\\logfile.log"/>
  <appendToFile value="true"/>
  <rollingStyle value="Size"/>
  <maxSizeRollBackups value="10"/>
  <maximumFileSize value="1MB"/>
  <staticLogFileName value="true"/>
  <layout type="log4net.Layout.PatternLayout">
   <conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline"/>
  </layout>
  <filter type="log4net.Filter.LevelRangeFilter">
   <param name="LevelMin" value="DEBUG" />
   <param name="LevelMax" value="FATAL" />
  </filter>
 </appender>

</log4net>

Unfortunately, log.IsDebugEnabled is always false. How do I configure log4net so that I can log only debug messages?

Answer 1

Before calling LogManager.GetLogger("")

You have to call log4net.Config.XmlConfigurator.Configure(); In an ASP.NET app you probably want to put this call in Application_Start

Answer 2

Yes, do it like Anson said. Also, if you are calling Configure in a class library you can do that by adding an attribute to your class:

[assembly: XmlConfigurator(Watch = true)]