log4net-configuration – Tarik Billa

Log4Net: Logging in 2 byte languages (japanese, chinese etc.)

December 21, 2023 by Tarik

The log file encoding is specified by FileAppender.Encoding. It can be configured using the encoding configuration element. Example: <appender name=”FileAppender” type=”log4net.Appender.FileAppender”> <file value=”file.log” /> <encoding value=”utf-8″ /> … The value is the code page name. The corresponding Encoding is obtained using the System.Text.Encoding.GetEncoding(string) method. For a list of code pages, see the Encoding class documentation.

Why are all my log4net levels false?

December 20, 2023 by Tarik

I have had this same problem. I get around it by using the below line of code in the Application_Start method in the Global.asax.cs (assuming its a .Net web application) log4net.Config.XmlConfigurator.Configure();

Log4net configuration from assembly attribute does not load configuration file

December 3, 2023 by Tarik

I also have trouble with this method of boostrapping log4net. The documentation says you have to make a call very early in your application startup if you use configuration attributes you must invoke log4net to allow it to read the attributes. A simple call to LogManager.GetLogger will cause the attributes on the calling assembly to … Read more

unable to get log4net working with .net windows service

August 12, 2023 by Tarik

Please note that when the process is run as Windows Service, Environment.CurrentDirectory will be “C:\Windows\system32” So if you put the log4net configuration file (log4net.config) next to your *.exe, you can use the following code to configure log4net. var assemblyFolder = Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location); XmlConfigurator.Configure(new FileInfo(Path.Combine(assemblyFolder, “log4net.config”)));

Writing logs to file

July 27, 2023 by Tarik

Here is a complete step-by-step guide to adding Log4Net to your project, under Visual Studio 2012 and .NET 4.5. Add a new C# console app to your solution. Select Tools >> Library Package Manager >> Manage NuGet Packages For Solution and search for log4net. Install it, and select which project(s) you want to add the … Read more

Configure log4net to send errors to different appenders based on level

July 21, 2023 by Tarik

This can be done using the threshold or filter elements within the appender. Note that the threshold can be directly under the appender, where it acts as an inclusive filter, or under a evaluator e.g. <evaluator type=”log4net.Core.LevelEvaluator”> <threshold value=”ERROR”/> </evaluator> where it acts as an inclusive filter for skipping buffering (immediate output), where applicable. Full … Read more

How to use log4net in Asp.net core 2.0

March 9, 2023 by Tarik

There is a third-party log4net adapter for the ASP.NET Core logging interface. Only thing you need to do is pass the ILoggerFactory to your Startup class, then call loggerFactory.AddLog4Net(); and have a config in place. So you don’t have to write any boiler-plate code. More info here

How to configure log4net to print to console in debug mode

February 28, 2023 by Tarik

You need to have both appenders declared in your <root> section. Configure your log4net like this: <log4net> <appender name=”Console” type=”log4net.Appender.ConsoleAppender”> <layout type=”log4net.Layout.PatternLayout”> <conversionPattern value=”%date %-5level: %message%newline” /> </layout> </appender> <appender name=”RollingFileAppender” type=”log4net.Appender.RollingFileAppender”> <file value=”Log.txt” /> <appendToFile value=”false” /> <rollingStyle value=”Size” /> <maxSizeRollBackups value=”10″ /> <maximumFileSize value=”50MB” /> <staticLogFileName value=”true” /> <layout type=”log4net.Layout.PatternLayout”> <conversionPattern value=”%date %-5level[%logger]: … Read more

log4net hierarchy and logging levels

December 2, 2022 by Tarik

This might help to understand what is recorded at what level Loggers may be assigned levels. Levels are instances of the log4net.Core.Level class. The following levels are defined in order of increasing severity – Log Level. Number of levels recorded for each setting level: ALL DEBUG INFO WARN ERROR FATAL OFF •All •DEBUG •DEBUG •INFO … Read more