public void Normalize()
        {
            if (SortField.IsNullOrWhiteSpace())
            {
                SortField = "CreatedTime";
            }

            switch (SortOrder)
            {
            case "ascend":
                SortOrder = "Asc";
                break;

            default:
                SortOrder = "Desc";
                break;
            }
        }
        public void Normalize()
        {
            if (SortField.IsNullOrWhiteSpace())
            {
                SortField = "ProductLineName,Code";
            }

            switch (SortOrder)
            {
            case "ascend":
                SortOrder = "Asc";
                break;

            default:
                SortOrder = "Desc";
                break;
            }
        }