app.config

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

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

  <log4net>

    <root>
      <level value="ALL" />
      <appender-ref ref="LogFileAppender" />
    </root>

    <appender name="LogFileAppender" type="log4net.Appender.RollingFileAppender" >
      <param name="File" value="C:\log\strategyNT7.log" />
      <param name="AppendToFile" value="true" />
      <rollingStyle value="Size" />
      <maxSizeRollBackups value="10" />
      <maximumFileSize value="10MB" />
      <staticLogFileName value="true" />
      <layout type="log4net.Layout.PatternLayout">
        <param name="ConversionPattern" value="%date [%thread] %-5level %logger [%C{1}.%M] - %message%newline" />
      </layout>
    </appender>
  </log4net>
</configuration>