如何为ac#Windows服务配置log4net

<?xml version="1.0" encoding="utf-8"?>
<log4net>
  <appender name="RollingFileAppender" type="log4net.Appender.RollingFileAppender">
    <file value="logs/log.txt" />
   <appendToFile value="true" />
   <rollingStyle value="Size" />
    <maxSizeRollBackups value="10" />
   <maximumFileSize value="10MB" />
   <staticLogFileName value="true" />
   <layout type="log4net.Layout.PatternLayout">
      <conversionPattern value="%date [%thread] %-5level %logger - %message%newline" />
    </layout>
  </appender>
  <root>
   <level value="DEBUG" />
    <appender-ref ref="RollingFileAppender" />
  </root>
</log4net>

log4net.Config.XmlConfigurator.Configure();

private static readonly ILog log = LogManager.GetLogger(typeof(Program));

log.Info("程序启动");
log.Warn("发生了一个警告");
log.Error("发生了一个错误", ex);
log.Fatal("发生了一个致命错误", ex);