Log4net Issue inside wcf

问题

I'm using log4net in my application, it works fine every where.

I've used it in body of my WCF methods to log interactions between client and service. when ever a WCF client calls any of the methods, an exception occurs internally inside log4net saying that is can not retrieve stack information;

This is my wcf:

 [ServiceBehavior(InstanceContextMode = InstanceContextMode.Single, ConcurrencyMode =  ConcurrencyMode.Multiple)]
    public class MyWcfService : IMyWcfService

      {
        private static readonly ILog logger = LogManager.GetLogger(typeof(MyWcfService));
        private static readonly object lockObject = new object();
...
...
...//other code are remove for simplicity


     public void Disconnect()
        {
            logger.DebugFormat(WcfMessages.MethodCalled, "Disconnect");

            lock (lockObject)
            {
                try
                {
                    {
                        client = null;
                        logger.Info(string.Format(WcfMessages.ClientDisconnected));
                    }
                }
                catch (Exception exception)
                {
                    logger.Error(string.Format(WcfMessages.ClientDisconnectException), exception);
                }
            }
        }
}

Here is log4net's console appender output:

Log4Net Cofnig:

<appender name="ConsoleAppender" type="log4net.Appender.ConsoleAppender">
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%logger  %method  %-4line - %message%newline" />
      </layout>
    </appender>

why i see the exception? how i can solve it? Thanks.

来源：https://stackoverflow.com/questions/21088571/log4net-issue-inside-wcf