public DataTable SetCategoryCache()
        {
            DataTable dt = null;

            AppCache.Remove("CATEGORYCACHE");
            string sSql = string.Format("select * from K_Category where IsDel=0");

            dt = InfoHelper.ExecuteSQL(sSql);
            if (dt != null && dt.Rows.Count > 0)
            {
                AppCache.Add("CATEGORYCACHE", dt);
            }
            return(dt);
        }