Log4Net Cofiguration

I had to post this one long days ago as I promised in one of my earlier post about Log4Net. Sorry for this late. I am not a man of words. Thanks to Chris, for reminding me about this post. There are lots of things in the configuration of Log4Net. I will only about the commonly used sections.

<log4net>
	<appender name="LogFileAppender" type="log4net.Appender.FileAppender">
		<param name="File" value="D:\Temp\ApplicationLog.log" />
		<param name="AppendToFile" value="true" />
		<layout type="log4net.Layout.PatternLayout">
			<param name="Header" value="" />
			<param name="Footer" value="" />
			<param name="ConversionPattern" value="%d [%t] %-5p %m%n" />
		</layout>
	</appender>
	<appender name="ConsoleAppender" type="log4net.Appender.ConsoleAppender" >
		<layout type="log4net.Layout.PatternLayout">
			<param name="Header" value="[Header]\r\n" />
			<param name="Footer" value="[Footer]\r\n" />
			<param name="ConversionPattern" value="%d [%t] %-5p %m%n" />
		</layout>
	</appender>
	<root>
		<level value="DEBUG" />
		<appender-ref ref="LogFileAppender" />
		<appender-ref ref="ConsoleAppender" />
	</root>
</log4net>

Log4Net is configured in the configuration section “log4net”, specified with the tag <log4net>. Under this tag, you can find two tags, <appender> and <root>. (There could be more actually. but I did not need them yet.)

<appender> section says where and how the log should be written. It could be in the console, in a file, or database. Logs can even be sent to an email address. So, depending on you needs, you have to configure the appender. Under <log4net> element one or more appenders can be defined. I am interested to describe some of the appenders. Please remind me if I forget to do so.

<root> section is to say, which appender will be used to log, and what types of log will be written.Only one root logger element may only be defined and it must be a child of <log4net> element. To define te log-level, you have to specify your desired log-level in the <level> element. You can set the ‘value’ attribute to any of the five log-levels. The levels are as follows hierarchically:

1. FATAL
2. ERROR
3. WARN
4. INFO
5. DEBUG

Once you specify the level of the log in the ‘value’ attribute, logs for that level and the levels above will be written.