protected override void OnStop()
 {
     timer1.AutoReset = false;
     timer1.Enabled   = false;
     SendMailService.WriteErrorLog("Service stopped");
 }
 protected override void OnStart(string[] args)
 {
     timer1.AutoReset = true;
     timer1.Enabled   = true;
     SendMailService.WriteErrorLog("Service started");
 }