log4net config

1. nuget:  install log4net.

2.create log4net.config

3.in AssemblyInfo.cs Add line

　　　　[assembly: log4net.Config.XmlConfigurator(ConfigFile = "log4net.config")]

4.ensure that log4net.config file is copied to the bin\ folder when building 

　　set Copy to Output Directory = Copy always

5.edit config file.

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <log4net>
    <root>
      <level value="ALL" />
      <appender-ref ref="console" />
      <appender-ref ref="file" />
    </root>
    <appender name="console" type="log4net.Appender.ConsoleAppender">
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%date %level %logger - %message%newline" />
      </layout>
    </appender>
    <appender name="file" type="log4net.Appender.RollingFileAppender">
      <file value="logs\" />
      <datePattern value="yyyy.MM.dd'.log'" />
      <appendToFile value="true" />
      <rollingStyle value="Composite" />
      <maxSizeRollBackups value="10" />
      <maximumFileSize value="10MB" />
      <staticLogFileName value="false" />
      <layout type="log4net.Layout.PatternLayout">
        <!--<conversionPattern value="%date %level %logger - %message%newline" />-->
        <conversionPattern value="%date %-5level - %message%newline" />
      </layout>
      
    </appender>
  </log4net>
</configuration>

 

6. example

static void Main(string[] args)
{
log.Info("logging begin.");
Console.WriteLine("Hit enter");
log.Debug("debug");
Console.WriteLine("Hit enter");
log.Warn("warnning");
Console.WriteLine("Hit enter");
log.Error("error");
Console.WriteLine("Hit enter");

return;

}