如何在Visual Studio2015扩展中配置log4net以写入日志

<log4net>
  <appender name="LogFileAppender" type="log4net.Appender.FileAppender">
    <file value="logs\log.txt" />
    <appendToFile value="true" />
    <layout type="log4net.Layout.PatternLayout">
      <conversionPattern value="%date [%thread] %-5level %logger - %message%newline" />
    </layout>
  </appender>
  <root>
    <level value="DEBUG" />
    <appender-ref ref="LogFileAppender" />
  </root>
</log4net>

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

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

public void MyMethod()
{
    log.Debug("This is a debug message");
    log.Info("This is an info message");
    log.Warn("This is a warning message");
    log.Error("This is an error message");
    log.Fatal("This is a fatal message");
}