Is a event source in the event log : EventLog : Windows C# Examples

    
using  System;
using  System.Collections;
using  System.ComponentModel;
using  System.Data;
using  System.Diagnostics;
using  System.ServiceProcess;

public  class  Service1  :  System.ServiceProcess.ServiceBase
{
        private  System.Diagnostics.EventLog  eventLog1;

        public  Service1()
        {
                this.eventLog1  =  new  System.Diagnostics.EventLog();
                ((System.ComponentModel.ISupportInitialize)(this.eventLog1)).BeginInit();

                this.eventLog1.Log  =  "MyCustomLog";
                this.eventLog1.Source  =  "CustomEventService2";

                this.AutoLog  =  false;
                this.ServiceName  =  "CustomEventService";
                ((System.ComponentModel.ISupportInitialize)(this.eventLog1)).EndInit();
        }

        //  The  main  entry  point  for  the  process
        static  void  Main()
        {
                System.ServiceProcess.ServiceBase[]  ServicesToRun;
                ServicesToRun  =  new  System.ServiceProcess.ServiceBase[]  {  new  Service1()  };
                System.ServiceProcess.ServiceBase.Run(ServicesToRun);
        }

        protected  override  void  OnStart(string[]  args)
        {
                if  (  !EventLog.SourceExists(  eventLog1.Source  )  )
                {
                        EventLog.CreateEventSource(  eventLog1.Source,  eventLog1.Log  );
                }
                eventLog1.WriteEntry(  "Hello",  EventLogEntryType.Information  );
        }

        protected  override  void  OnStop()
        {
                eventLog1.WriteEntry(  "Goodbye",  EventLogEntryType.Warning  );
        }
}