C#

<code>Creating root</code>
Hierarchy root=(Hierarchy) log4net.LogManager.CreateRepository("trial");
			root.Configured=true;
			root.Root.Level=log4net.Core.Level.Warn;
			log4net.ILog log=log4net.LogManager.GetLogger("trial",root.Name);
			log4net.Repository.Hierarchy.Logger loggerRepo=(log4net.Repository.Hierarchy.Logger)log.Logger;
			
			<code>create layout</code>
			log4net.Layout.PatternLayout objPatterLayout=new log4net.Layout.PatternLayout("Date:%d,Thread:[%t]");
			

			<code>add appender to root after setting its properties</code>
			EventLogAppender appenderEventLog=new EventLogAppender();
			appenderEventLog.MachineName=".";//local machine.
			appenderEventLog.LogName="System";
			appenderEventLog.ApplicationName="trial apps";
					          appenderEventLog.Layout=objPatterLayout;
			appenderEventLog.ActivateOptions();
			
			loggerRepo.AddAppender(appenderEventLog);


			//try to log
			log4net.ILog log2=log4net.LogManager.GetLogger("trial",typeof(Form1).Name);
			if(log2.IsErrorEnabled)
				log2.Error("Error from trial apps");
			if(log2.IsInfoEnabled)
				log2.Warn("info from trial apps");

if (!EventLog.SourceExists("TestSource"))
   EventLog.CreateEventSource("TestSource", "System");
EventLog evtLog = new EventLog();
evtLog.Source = "TestSource";
evtLog.WriteEntry("This is a test", EventLogEntryType.Information); 

if (EventLog.SourceExists("TestSource"))
   EventLog.DeleteEventSource("TestSource");

class SomeDerived : SomeBase <br />
{<br />
...<br />
public SomeDerived() << Constructor called *After* SomeBase's constructor is invoked<br />
{<br />
 ...<br />
 SomeMethod();  << This is what I plan to do, but I don't want burden of invoking this base class method to resides on Derived class (and at same time I can't put this on base class constructor because this must wait till Derived class finishes before invoking)<br />
 return;<br />
}<br />
}<br />
<br />
class SomeBase<br />
{<br />
 ...<br />
 SomeMethod();<br />
 ...<br />
}