How to make assembly directive in ASP.NET site.

[Shaun Lipscombe]

Where can I put [assembly: log4net.Config.XmlConfigurator(Watch = true)]
in an ASP.NET webpage?  Ideally I'd like to specify this in some place
like the Global.asax so that all my sites will be configured.  There is
a <%Assembly %> directive but it only has the attributes src and name so
I'm not sure how to declare it.