Changing the log level programmatically in log4net?

Question

Is there a way to set the log level in log4net programmatically? I\'d assumed that there would be a property that would let you do this, but I can\'t seem to find one.

Answer 1

This is the way I'm configuring log4net programmatically:

//declared as a class variable   
private static readonly ILog logger = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);

 PatternLayout layout = new PatternLayout(@"%date %-5level %message%newline");
    RollingFileAppender appender = new RollingFileAppender();
    appender.Layout = layout;
    appender.File = "c:\log.txt";
    appender.AppendToFile = true;
    appender.MaximumFileSize = "1MB";
    appender.MaxSizeRollBackups = 0; //no backup files
    appender.Threshold = Level.Error;
    appender.ActivateOptions();                       
    log4net.Config.BasicConfigurator.Configure(appender);

I think the Appender's Threshold property is what you looking for, it will control what levels of logging the appender will output.

The log4net manual has lots of good configuration examples.