Question

We are trying to integrate NHibernate as our OR/M, however, we are currently using Enterprise Library’s logging application block. I know that NHibernate uses log4net to log. Does anyone have any example on how to use Enterprise Library to log NHibernate related logs?

Answer 1

Write your own log4net appender that writes to a EL logger. It’s an adapter pattern.

inherit a new/custom appender class from log4net.Appender.AppenderSkeleton

override the Append event handler from the skeleton class, and in it show the RenderedMessage, something like this:

using System; using log4net; using System.Windows.Forms;  namespace MyAppender {     public class CustomAppender : log4net.Appender.AppenderSkeleton     {         protected override void Append(log4net.spi.LoggingEvent log)         {             // log to EL logger based on log properties.         }     } } 

you then need to configure log4net config file….

<?xml version='1.0' encoding='utf-8' ?> <configuration>     <log4net>         <appender name='MyAppender' type='MyAppender.CustomAppender,CustomAppender'>             <threshold value='DEBUG'/>         </appender>          <root>             <level value='DEBUG' />                 <appender-ref ref='MyAppender' />         </root>     </log4net> </configuration> 

I have not tested this, but it should get you going.