Close Application after form load/backgroundworker code completes

 private void Form1_Load(object sender, System.EventArgs e
        {

              timer1.enable = true;
              timer1.interval = 1000;
              timer1.Start();
            

        }



        private void timer1_Tick(object sender, EventArgs e)
        {
            label1.Visible = !label1.Visible;
            
        }

        private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
        {     

                        

     
            progressBar1.Value = 200;
            ServiceController serviceController = new ServiceController("Spooler");
            serviceController.Stop();
            progressBar1.Value = 400;

            serviceController.Start();
            Thread.Sleep(3000);
            progressBar1.Value = 600;
            foreach (string path in Directory.GetFiles("C:\\Windows\\System32\\spool\\PRINTERS"))
                File.Delete(path);
            progressBar1.Value = 800;
            string szString = "~JR";
            PrintDialog printDialog = new PrintDialog();
            printDialog.PrinterSettings = new PrinterSettings();
            printDialog.PrinterSettings.PrinterName = "Label Printer";
            Form1.RawPrinterHelper.SendStringToPrinter(printDialog.PrinterSettings.PrinterName, szString);
            progressBar1.Value = 1000;                    

        }

         
    }
}