RollingFIleAppender roll log files to sub folder

[Jim Scott]

We  have a COM object logging object that our company uses to log in several 
applications that has a nice feature in which log files are rolled into a dated 
sub folder. Every now and then the netops crew asks why the applications that 
use log4net cannot do the same thing. Does this feature perhaps exist and I am 
just not aware of how to configure it? Anyone else have any interest in such a 
feature if not ?