public async Task <IActionResult> GenerateExcelFormat()
        {
            try
            {
                var ret = await _excelService.GenerateExcelFile();

                HttpContext.Response.Headers.Add("Access-Control-Expose-Headers", "Content-Disposition");
                return(File(ret.Item1, "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet", ret.Item2));
            }
            catch (Exception ex)
            {
                _logger.LogError(ex, ex.Message);
                Response.StatusCode = 500;
                return(new JsonResult(new { ex.Message }));
            }
        }