Rob There is a property PreserveLogFileNameExtension checked into the trunk, but I don't think it is in the shipped version of log4net and there is an issue reported against it, https://issues.apache.org/jira/browse/LOG4NET-203, RollingFileAppender does not roll more than one time when PreserveLogFileNameExtension is true. The original issue that added this feature is at https://issues.apache.org/jira/browse/LOG4NET-64.
To use it, you would add the following line to your appender <preserveLogFileNameExtension value="true"/> I have a compiled version of the current source at http://www.alteridem.net/2010/07/09/log4net-udpappender-with-ipv6-on-windows-vista-and-7/ that you can try if this feature is important to you, but I would suggest testing it before you deploy as it is not an official release and likely contains bugs. Rob -----Original Message----- From: Rob Richardson [mailto:[email protected]] Sent: Wednesday, July 28, 2010 3:57 PM To: Log4NET User Subject: Rotated file name control Greetings! I am using a rotating file log. The current file is TrendMasterCS.log. Yesterday's file is TrendMasterCS.log.2010-07-10. Since the default action for a file is based on its extension, I would prefer the rotated file name to be TrendMasterCS.2010-07-10.log. I didn't see a way to control that. Can it be controlled? Thank you. RobR
