title: Track user with log4net for a website
body: <p>I am searching for the best way for track user on a web site based on asp.net.<br>
  We are using log4net to log some business actions (enter on this page, click on button, etc.). But for multiple users, log file cannot be read easily.<br><br>
  So I need add a property 'UserName' on the config file like this :<br></p>
  
  <pre><code> &lt;conversionPattern value="%date [%thread] - %property{UserName} - %-5level  - %logger - %message%newline"/&gt;
  </code></pre>
  
  <p>Do you hae any idea about the way to set 'UserName' ?<br></p>
  
  <p>thanks for your help</p>