EventLog appender C# does not write in event log viewer

I need to make my C# application to write log in Windows Event viewer.

I Used ,

 <appender name="EventLogAppender" type="log4net.Appender.EventLogAppender" >
  <param name="ApplicationName" value="DataLoader" />
  <layout type="log4net.Layout.PatternLayout">
    <conversionPattern value='{"Processed":"%d{yyyy-MM-dd HH:mm:ss}","Loglevel":"%p","Service":"DataLoader","Instance":"","AdditionalInfo":"%c{1}|%M","logtext":"%m%n"}'/>
  </layout>
</appender>

No Errors in Console but it does not write logs in windows event viewer