private void Services_Load(object sender, EventArgs e)
        {
            ExcelService excel = new ExcelService();

            if ((user.GetType() == typeof(Administration)))
            {
                col_services.ReadOnly    = false;
                col_price.ReadOnly       = false;
                col_priceForVIP.ReadOnly = false;
                col_leadTime.ReadOnly    = false;
                ms_toOrder.Visible       = false;
            }
            else
            {
                ms_delete.Visible = false;
            }

            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();
                }

                excel.ReadServiceList(service);
                FillDataGridView();
                excel.CloseDocument();
            }
        }