Configuring log4net in a VSTO

I've set up my VSTO Excel add-in to use log4net for logging. Unfortunately I'm (seemingly) not able to make it configure itself from the app.config (which I deliver together with the add-in via ClickOnce).

I have read http://www.darinhiggins.com/?p=13 which lists some ways to get the file name of the app.config and then configure log4net with

log4net.Config.XmlConfigurator.Configure(fileInfo)

However the approaches this blog lists seem very error-prone to me (t开发者_StackOverflowhey "smell bad").

Things like

ConfigurationManager.GetSection

make me believe the .NET framework knows exactly where to get the file and there must be a way to retrieve this information from the framework instead of having to figure it out on my own. However, the XmlConfigurator in turn only accepts a file name, stream or xml node...

(Why I believe it's not working at the moment: I have configured it to use a RollingFileAppender with the file name being H:\Data\Debug.log, but after a GetLogger(...).Debug(...), there is still no Debug.log in place...). I have used the exact same configuration in other places, successfully.

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XmlConfigurator.Configure(); uses the app.config file. That should work since the ConfigurationManager seems to be able to read the config file.