Try appender.ActivateOptions(), but I'm nor sure if it helps as you call Configure after setting up the appender
R -----Původní zpráva----- Od: Aleš Vojáček [mailto:algid...@gmail.com] Odesláno: 11. května 2010 11:10 Komu: log4net-user@logging.apache.org Předmět: Hi all I have some problems with set up IsDebugEnabled to false by code. var appender = new ConsoleAppender(); appender.Layout = new log4net.Layout.PatternLayout("%date [%thread] %-5level %type %logger - %message%newline"); appender.Threshold = Level.Info; log4net.Filter.DenyAllFilter f = new DenyAllFilter(); appender.AddFilter(f); log4net.Filter.LevelRangeFilter filter = new log4net.Filter.LevelRangeFilter(); filter.LevelMin = Level.Info; filter.LevelMax = Level.Fatal; appender.AddFilter(filter); log4net.Config.BasicConfigurator.Configure(appender); var logger = log4net.LogManager.GetLogger("Main"); logger.IsDebugEnabled is still set to true :-( Can someone help me with that? A.