public IActionResult GetAllRoot(int startPage, int pageSize)
        {
            int rowCount = 0;

            var result = _service.GetAllRoot(startPage, pageSize, out rowCount);

            return(Json(new
            {
                rowCount = rowCount,
                pageCount = Math.Ceiling(Convert.ToDecimal(rowCount) / pageSize),
                rows = result,
            }));
        }