Change log4net logging level programmatically

None of these solutions present here worked for me. It wasn’t changing at runtime

Here is what worked for me:

((log4net.Repository.Hierarchy.Hierarchy)LogManager.GetRepository()).Root.Level = Level.Debug;
((log4net.Repository.Hierarchy.Hierarchy)LogManager.GetRepository()).RaiseConfigurationChanged(EventArgs.Empty);

You have to call RaiseConfigurationChanged after making changes to its config.