public ContentResult Search(int page, int rows, string sidx, string sord, string filters, string searchField, string searchOper, string searchString)
        {
            var model = new RoundListViewModel();
            ContentResult result = new ContentResult()
            {
                Content = model.RoundListGrid.Search(sidx, sord, page, rows, true, filters, searchField, searchOper, searchString),
                ContentType = "application/json"
            };

            return result;
        }
        public FileStreamResult Export(string sidx, string sord, string filters)
        {
            var model = new RoundListViewModel();
            Stream fileStream = new MemoryStream(_excelService.GetExcel(model.RoundListGrid, "Round", sidx, sord, filters));
            HttpContext.Response.AddHeader("content-disposition", "attachment; filename=Round.xlsx");

            return new FileStreamResult(fileStream, "application/ms-excel");
        }