log4net

Log4Net: Programmatically specify multiple loggers (with multiple file appenders)

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This thread at the log4net Dashboard details an approach. To summarize a little, hopefully without ripping off too much code: using log4net; using log4net.Appender; using log4net.Layout; using log4net.Repository.Hierarchy; // Set the level for a named logger public static void SetLevel(string loggerName, string levelName) { ILog log = LogManager.GetLogger(loggerName); Logger l = (Logger)log.Logger; l.Level = l.Hierarchy.LevelMap[levelName]; … Read more

Why isn’t there a trace level in log4Net?

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You can add a Verbose (or Trace level) to log4net by using extension methods. This is what I’m using: public static class ILogExtentions { public static void Trace(this ILog log, string message, Exception exception) { log.Logger.Log(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType, log4net.Core.Level.Trace, message, exception); } public static void Trace(this ILog log, string message) { log.Trace(message, null); } public static void … Read more

Log4net randomly stops logging.

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Log4Net will fail silently if something goes wrong and it is unable to write to its appenders. This is actually a good thing, since it means a bit of failed logging won’t bring down an otherwise healthy system, but it can be annoying when something isn’t logging as you expect. Your best bet is to … Read more

Maximum Filesize of LogFileAppender in Log4Net

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The FileAppender class does not have the MaxFileSize/MaximumFileSize properties. You only get those if you use a RollingFileAppender. Here’s an example that will limit your file to a fixed maximum size, with no backups (set maxSizeRollBackups to 0). Note that when the file reaches its max size, it truncates (basically deletes all existing logging and … Read more

How to log SQL calls with NHibernate to the console of Visual Studio?

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To show the SQL in the output window of Visual Studio, configure log4net to use TraceAppender in your log4net config. This: <appender name=”DebugSQL” type=”log4net.Appender.TraceAppender”> <layout type=”log4net.Layout.PatternLayout”> <conversionPattern value=”%date [%thread] %-5level %logger [%property{NDC}] – %message%newline” /> </layout> </appender> Then this: <logger name=”NHibernate.SQL” additivity=”false”> <level value=”DEBUG” /> <appender-ref ref=”DebugSQL” /> </logger> EDIT: I can’t seem to format … Read more

unable to get log4net working with .net windows service

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Please note that when the process is run as Windows Service, Environment.CurrentDirectory will be “C:\Windows\system32” So if you put the log4net configuration file (log4net.config) next to your *.exe, you can use the following code to configure log4net. var assemblyFolder = Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location); XmlConfigurator.Configure(new FileInfo(Path.Combine(assemblyFolder, “log4net.config”)));

How do I use a GlobalContext property in a log4net appender name?

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I ran into the same behavior and solved it by setting the global variable before calling the XmlConfigurator… Here is what I am successfully using: log4net.config details: <appender name=”RollingLogFileAppender” type=”log4net.Appender.RollingFileAppender,log4net”> <File type=”log4net.Util.PatternString” value=”App_Data/%property{LogName}” /> … </appender> Global.asax details: private static readonly log4net.ILog log = log4net.LogManager.GetLogger(“Global.asax”); void Application_Start(object sender, EventArgs e) { // Set logfile name … Read more

Log4Net – How to add a 2nd logger used only for specific sections of code

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You can easily create a special logger like this: ILog specialLogger = LogManager.GetLogger(“SpecialLogger”); You can then configure the system to use a dedicated appender for this logger: <logger name=”SpecialLogger” additivity=”false”> <level value=”ALL” /> <appender-ref ref=”SpecialLogFileAppender” /> </logger> <root> <level value=”ALL” /> <appender-ref ref=”LogFileAppender” /> </root>

Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)