rolling by size/date

Is it possible to roll by size and still have the date specified in the
DatePattern param of the RollingLogFileAppender still appear as part of
the filename ?  

Another, related issue:
I understand from the documentation that for the RollingFileAppender
The DatePattern property somehow determines the policy of rolling, but I
cannot understand what the rule is. I need my file to roll every day at
midnight but how do I specify this ? The configuration below seems to
roll the file very very often. Is it because the DatePattern param
contains seconds ? What is the rule here ?

My relevant configuration section is:
<appender name="RollingLogFileAppender"
type="log4net.Appender.RollingFileAppender">
<param name="File" value="..\\logs\\FlowMgr_log" />
<param name="AppendToFile" value="true" />
<param name="MaxSizeRollBackups" value="20" />
<param name="DatePattern" value="-ddMMyyTHHmmSS&quot;.txt&quot;"/>
<param name="RollingStyle" value="Date" />
<param name="StaticLogFileName" value="false" />
<layout type="log4net.Layout.PatternLayout">
<param name="ConversionPattern" value="%d [%t] %-5p %c [%x] - %m%n" />
</layout>
</appender>

thanks in advance for any help,
Alex.



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