title: EventLog.CreateEventSource is not creating a custom log
body: <p>I have some code like this:</p>
  
  <pre><code>EventLog.CreateEventSource("myApp", "myAppLog");
  EventLog.WriteEntry("myApp", "Test log message", EventLogEntryType.Error);
  </code></pre>
  
  <p>Now, unless I'm missing something having read MSDN, this should cause a new log 'myAppLog' to be created in the event viewer, and an entry should be added to that new log with the source name 'myApp'.  But, I can't get the new log to be created.  This always just writes an error log message to the Application log, with the source 'myApp' - 'myAppLog' is nowhere to be seen.  What am I doing wrong?  I am logged in as an Administrator.</p>