title: Log4net doesn't write to file
body: <p>I want add new log to file.this is my appender:</p>
  
  <pre class="lang-xml prettyprint-override"><code>&lt;appender name="RollingFileAppender" type="log4net.Appender.RollingFileAppender"&gt;
    &lt;file value="mylogfile.txt"/&gt;
    &lt;appendToFile value="true"/&gt;
    &lt;rollingStyle value="Size"/&gt;
    &lt;maxSizeRollBackups value="5"/&gt;
    &lt;maximumFileSize value="10MB"/&gt;
    &lt;staticLogFileName value="true"/&gt;
    &lt;filter type="log4net.Filter.StringMatchFilter"&gt;
      &lt;stringToMatch value="test"/&gt;
    &lt;/filter&gt;
    &lt;filter type="log4net.Filter.StringMatchFilter"&gt;
      &lt;stringToMatch value="error"/&gt;
    &lt;/filter&gt;
    &lt;filter type="log4net.Filter.DenyAllFilter"/&gt;
    &lt;layout type="log4net.Layout.PatternLayout"&gt;
      &lt;conversionPattern value="%date [%thread] %level %logger - %message%newline%exception"/&gt;
    &lt;/layout&gt;
  &lt;/appender&gt;
  &lt;root&gt;
    &lt;level value="All"/&gt;
    &lt;appender-ref ref="RollingFileAppender"/&gt;
  &lt;/root&gt;
  </code></pre>
  
  <p>and on my class I add </p>
  
  <pre><code>[assembly: XmlConfigurator(Watch = true)]
  </code></pre>
  
  <p>and I add access everyone for the file but: log4net doesn't write to file. Why?</p>