title: How to set Telemetry Channel for Application Insights Log4Net Appender?
body: <p>I added those Nuget Packages to my WPF App:</p>
  
  <ul>
  <li>Microsoft.ApplicationInsights.Log4NetAppender</li>
  <li>Microsoft.ApplicationInsights.WindowsServer.TelemetryChannel</li>
  </ul>
  
  <p>The logger is logging in a file, that works. But no data is transferred to Azure. 
  I got this error:</p>
  
  <ul>
  <li>AI: Server telemetry channel was not initialized. So persistent storage is turned off. You need to call ServerTelemetryChannel.Initialize(). Currently monitoring will continue but if telemetry cannot be sent it will be dropped.</li>
  </ul>
  
  <p>My Question: Where (in the code) should i initialize the telemetry channel? And why do i have to do this? What's the appender for if i have to add a telemetry client (with config) anyways?</p>