Question

Im trying to create a log file using log4net.
I have it create a log file. But i can’t get the name of the log file to be the current date.

I have tried this:

<file value="log\\$date.txt"/>

But this just leans me with a file called “$date.txt” in the log folder.
I would like the file to be named “25-04-2012.txt”

Anyone know the little trick to make this work?

Answer 1

From the documentation, you should use a RollingFileAppender

This example show how to configure the RollingFileAppender to roll log
files on a date period. This example will roll the log file every
minute! To change the rolling period adjust the DatePattern value. For
example, a date pattern of “yyyyMMdd” will roll every day. See
System.Globalization.DateTimeFormatInfo for a list of available
patterns.

<appender name="RollingLogFileAppender" type="log4net.Appender.RollingFileAppender">
    <file value="logfile" />
    <appendToFile value="true" />
    <rollingStyle value="Date" />
    <datePattern value="yyyyMMdd-HHmm" />
    <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline" />
    </layout>
</appender>

Documentation (search for rollingFileappender)