Log4Net A small introduction Start working with log4net Levels of logging Loggers and Appenders How to debug issues with log4net Layouts – and types Filters – and types A Small introduction: From http://logging.apache.org/log4net/release/manual/introduction.html, you can see Log4net framework is based on log4j. In short we can say, log4net is for Microsoft .Net applications and log4j is for java. So why do we need log4net or log4j? This tool helps the programmer to log information to different targets.