如何使用log4net记录跟踪消息？

Install-Package log4net

<?xml version="1.0" encoding="utf-8" ?>
<log4net>
  <appender name="RollingFileAppender" type="log4net.Appender.RollingFileAppender">
    <file value="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>

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

using log4net;

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

log.Debug("这是一条DEBUG级别的日志");
log.Info("这是一条INFO级别的日志");
log.Warn("这是一条WARN级别的日志");
log.Error("这是一条ERROR级别的日志");
log.Fatal("这是一条FATAL级别的日志");