<p>I'm fairly new to Castle Windsor and am looking into the in's and out's of the logging facility. It seems fairly impressive but the only thing i can't work out is where Windsor sets the Logger property on my classes. As in the following code will set Logger to the nullLogger if the class hasn't been setup yet but when Resolve is finished running the Logger property is set. </p>

<pre><code>private ILogger logger;

public ILogger Logger
{
    get
    {
        if (logger == null) 
            logger = NullLogger.Instance;
        return logger;
    }
    set { logger = value; }
}
</code></pre>

<p>So what I am wondering is how and where windsor sets my Logger property. </p>

<p>Cheers
Anthony</p>

The logger is setup by the logging facility, which is in the
```
<facilities>
```
section of the configuration.  For example to use log4net your app or web.config would look something like this:
```
```
<?xml version="1.0"?>
<configuration>
    <configSections>
        <section name="castle" type="Castle.Windsor.Configuration.AppDomain.CastleSectionHandler, Castle.Windsor"/>
    </configSections>
<Configuration>

<castle>

    <facilities>
        <facility id="loggingfacility" 
             type="Castle.Facilities.Logging.LoggingFacility, Castle.Facilities.Logging" 
             loggingApi="log4net" 
             configFile="logging.config" />
    </facilities>

</castle>
</configuration>
```
```