private void ServicesForm_FormClosing(object sender, FormClosingEventArgs e)
        {
            if ((user.GetType() == typeof(Administration)))
            {
                Administration admin = (Administration)user;
                ExcelService   excel = new ExcelService();
                string         path  = Environment.GetFolderPath(Environment.SpecialFolder.Personal) + "\\Information System For Car Service\\Information System.xls";
                if (excel.ExcelIsPresent())
                {
                    if (File.Exists(path))
                    {
                        excel.OpenDocument(path);
                    }
                    else
                    {
                        excel.NewDocument();
                    }

                    FillService();
                    excel.WriteServiceList(service);
                    excel.CloseDocument();
                }
            }
        }