Basic RollingFileAppender log4net configuration

log4net.config

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
    <configSections>
        <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net" />
    </configSections>
    <log4net>
        <!-- Setup a rolling file appender -->
        <appender name="RollingFileAppender" type="log4net.Appender.RollingFileAppender">
            <file value="..\filename.log" />
            <appendToFile value="true" />
            <!-- <lockingModel type="log4net.Appender.FileAppender+MinimalLock" /> -->
            <rollingStyle value="Date" />
            <datePattern value=".yyyy-MM-dd" />
            <staticLogFileName value="true" />
            <layout type="log4net.Layout.PatternLayout">
                <conversionPattern value="%-5level; %date{ISO8601}; [%thread]; %identity; %logger; %method; %message%newline" />
            </layout>
        </appender>

        <!-- Setup the root category, add the appenders and set the default level -->
        <root>
            <level value="DEBUG" />
            <appender-ref ref="RollingFileAppender" />
        </root>
    </log4net>
</configuration>