Log4Net config file name / location

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Hi, I have a vb.net application and I would like to use Log4Net for logging.
I have found loads of examples of it in use but can't find anything that explains of the basics. What I need to know is where does the default config file need to be and what should it be called. I am sure this is simple but I am unable to find any documentation anywhere.
Many thanks

Posted 18-May-14 23:04pm

dnibbo

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Daniel Bohlin · Accepted Answer · 2014-05-18T23:22:00

First of all you neet to add the following in the web.config or app.config.

XML

<configuration>
  <configsections>
    <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net" />
  </configsections>
</configuration>

Secondly you need to specify what appender to use, also in the config file.

XML

<log4net>
  <root>
    <level value="ALL" />
    <appender-ref ref="MyAppender" />
  </root>
  <appender name="MyAppender" type="SomeNamespace.MyAppender">
    <layout type="log4net.Layout.PatternLayout">
      <conversionpattern value="%date [%thread] %level %logger - %message%newline" />
    </layout>
      <filter type="log4net.Filter.LevelRangeFilter">
        <levelmin value="INFO" />
        <levelmax value="FATAL" />
      </filter>
  </appender>
</log4net>

Different appenders have different configs.

Finally, here is an example on how to use it all from code.

C#

using System;

[assembly: log4net.Config.XmlConfigurator(Watch = true)]

namespace ConsoleApplication7
{
    class Program
    {
        private static readonly log4net.ILog log = log4net.LogManager.GetLogger (System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);

        static void Main(string[] args)
        {
            log.Info("Info logging");

            Console.WriteLine("Press any key to exit.");
            Console.ReadKey();
        }
    }
}

Hope that helps.