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    copied!<p>Maybe you can write it like this:</p> <pre><code>&lt;root&gt; &lt;level value="DEBUG" /&gt; &lt;appender-ref ref="APP1" /&gt; &lt;appender-ref ref="APP2" /&gt; &lt;/root&gt; </code></pre> <p>Here is a configuration file that uses multiple appenders. You can find it in <a href="http://logging.apache.org/log4net/release/manual/configuration.html" rel="nofollow">http://logging.apache.org/log4net/release/manual/configuration.html</a></p> <pre><code>&lt;log4net&gt; &lt;appender name="Console" type="log4net.Appender.ConsoleAppender"&gt; &lt;layout type="log4net.Layout.PatternLayout"&gt; &lt;!-- Pattern to output the caller's file name and line number --&gt; &lt;conversionPattern value="%5level [%thread] (%file:%line) - %message%newline" /&gt; &lt;/layout&gt; &lt;/appender&gt; &lt;appender name="RollingFile" type="log4net.Appender.RollingFileAppender"&gt; &lt;file value="example.log" /&gt; &lt;appendToFile value="true" /&gt; &lt;maximumFileSize value="100KB" /&gt; &lt;maxSizeRollBackups value="2" /&gt; &lt;layout type="log4net.Layout.PatternLayout"&gt; &lt;conversionPattern value="%level %thread %logger - %message%newline" /&gt; &lt;/layout&gt; &lt;/appender&gt; &lt;root&gt; &lt;level value="DEBUG" /&gt; &lt;appender-ref ref="Console" /&gt; &lt;appender-ref ref="RollingFile" /&gt; &lt;/root&gt; </code></pre> <p></p> <p>It's possible that uses multiple appenders, but you can't use multiple FileAppenders(or RollingFileAppenders) to log in the same file. So if you change the APP2 appender to log in a different file, it works.</p> <pre><code>&lt;appender name="APP2" type="log4net.Appender.RollingFileAppender"&gt; &lt;file value="C:\Log2.txt" /&gt; &lt;layout type="log4net.Layout.PatternLayout,log4net"&gt; &lt;conversionPattern value="%date [%thread] %-5level %logger [%ndc] - message%newline" /&gt; &lt;/layout&gt; &lt;/appender&gt; </code></pre> <p>The problem maybe log4net can't access same file at same time by different FileAppenders.</p>
 

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