private static void TracingDequeueAction(TracingEvent[] evts) { bool writebak = true; foreach (IAppender appender in _appenders) { try { if (appender == _backupAppender) { writebak = false; } if (!appender.Protector.Failing) { appender.AppendTracing(evts); writebak = false; } } catch (Exception ex) { appender.Protector.OnException(ex); SystemLog.Error(LogEventID.TracingFailed, ex, "Tracing Appender<{0}> Write Tracing Failed!", appender.Type); } } if (writebak && _backupAppender != null) { try { _backupAppender.AppendTracing(evts); } catch (Exception ex) { SystemLog.Error(LogEventID.TracingFailed, ex, "Tracing Appender<{0}> Write Tracing Failed!", _backupAppender.Type); } } }