log4net日志输出配置即输出到文件又输出到visual studio的output窗口

<configuration>
    <configSections>
        <section name="log4net"
           type="log4net.Config.Log4NetConfigurationSectionHandler, log4net" />
    </configSections>
    <log4net>
        <appender name="LogFileAppender" type="log4net.Appender.FileAppender">
            <param name="File" value="LogTest2.txt" />
            <param name="AppendToFile" value="true" />
            <layout type="log4net.Layout.PatternLayout">
                <param name="Header" value="[Header]\r\n" />
                <param name="Footer" value="[Footer]\r\n" />
                <param name="ConversionPattern" value="%d [%t] %-5p %c %m%n" />
            </layout>
        </appender>

        <appender name="ConsoleAppender" type="log4net.Appender.ConsoleAppender" >
            <layout type="log4net.Layout.PatternLayout">
                <param name="Header" value="[Header]\r\n" />
                <param name="Footer" value="[Footer]\r\n" />
                <param name="ConversionPattern" value="%d [%t] %-5p %c %m%n" />
            </layout>
        </appender>

        <root>
            <level value="INFO" />
            <appender-ref ref="LogFileAppender" />
            <appender-ref ref="ConsoleAppender" />
        </root>
    </log4net>
</configuration>

log类文件
[assembly: log4net.Config.XmlConfigurator(ConfigFile="App.config",Watch = true)]
namespace LogTest
{
    public  class Logger
    {
        /// <summary>
        /// 输出日志到Log4Net
        /// </summary>
        /// <param name="t"></param>
        /// <param name="ex"></param>
        public static void WriteLog(Type t, Exception ex)
        {
            log4net.ILog log = log4net.LogManager.GetLogger(t);
            log.Error("Error", ex);
        }

        /// <summary>
        /// 输出日志到Log4Net
        /// </summary>
        /// <param name="t"></param>
        /// <param name="msg"></param>
        public static void WriteLog(Type t, string msg)
        {
            log4net.ILog log = log4net.LogManager.GetLogger(t);
            log.Error(msg);
        }

        public static void WriterInfoLog(Type t, string msg)
        {
            log4net.ILog log = log4net.LogManager.GetLogger(t);
            log.Info(msg);
        }
    }
}