app.config

<?xml version="1.0" encoding="utf-8" ?>
<configuration>

  <configSections>
    <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net"/>
  </configSections>
  
  <log4net>
    <appender name="MyRollingFileAppender" type="log4net.Appender.RollingFileAppender">
      <file value="snowflake_dotnet.log" />
      <appendToFile value="true"/>
      <rollingStyle value="Size" />
      <maximumFileSize value="10MB" />
      <staticLogFileName value="true" />
      <maxSizeRollBackups value="10" />
      <layout type="log4net.Layout.PatternLayout">
        <!-- <header value="[DateTime]  [Thread]  [Level]  [ClassName] Message&#13;&#10;" /> -->
        <conversionPattern value="[%date] [%t] [%-5level] [%logger] %message%newline" />
      </layout>
    </appender>
    <root>
      <level value="ALL" />
      <appender-ref ref="MyRollingFileAppender" />
    </root>
  </log4net>
  
</configuration>