Question

Under my VS2010 solution I’ve this situation:

• WEBSITE
• Library1
• Library2

On global.asax.cs I initialize the log4net configuration using:

private static log4net.ILog _logger = log4net.LogManager.GetLogger("globalASAX");

void Application_Start(object sender, EventArgs e)
{
    // Code that runs on application startup
    log4net.Config.XmlConfigurator.Configure();
    _logger.Info("[APPLICATION START] " + DateTime.Now.ToString());
} 

It works fine and Application start message is correclty available on log.txt file. The problem happens when I try to use log something on the classes available on DLL Library1 or Library2.

I added the row:

private static log4net.ILog _logger = log4net.LogManager.GetLogger(typeof(ImageRepository));

but when I try to all the _logger.error(“blabla”) nothing happens on log file; all properties of _logger are false (i.e. isdebugenable=false). How can I fix that? I followed the instruction available here:

http://logging.apache.org/log4net/release/manual/configuration.html

the configuration of log4net is under web.config file:

<log4net>
    <appender name="RollingFile" type="log4net.Appender.RollingFileAppender">
        <file type="log4net.Util.PatternString">
            <conversionPattern value="log\explorer-log-%date{ yyyy.MM.dd.HH.mm.ss}-[%processid].log"/>
        </file>
        <appendToFile value="true"/>
        <maximumFileSize value="1024KB"/>
        <maxSizeRollBackups value="5"/>
        <layout type="log4net.Layout.PatternLayout">
            <conversionPattern value="%date %level %logger - %message%newline"/>
        </layout>
    </appender>
    <root>
        <level value="DEBUG"/>
        <appender-ref ref="RollingFile"/>
    </root>
</log4net>

anyone can help me?
thanks,
Andrea

Answer 1

I suspect log4net cannot find the logger for your type ImageRepository. As a quick check create a named logger and try calling it.

private static log4net.ILog _logger = log4net.LogManager.GetLogger("FooLog");

And config

<root>
    <level value="DEBUG"/>
    <appender-ref ref="RollingFile"/>
</root>
<logger name="FooLog">
    <level value="DEBUG"/>
    <appender-ref ref="RollingFile"/>
</logger>