public ActionResult UsersDelete(string ids)
        {
            if (string.IsNullOrEmpty(ids))
            {
                return(Content("empty"));
            }
            string[]   allIds = ids.Split(',');
            List <int> idList = new List <int>();

            foreach (var i in allIds)
            {
                idList.Add(int.Parse(i));
            }

            if (UserInfoBll.DeleteUsers(idList) > 0)
            {
                return(Content("ok"));
            }
            return(Content("no"));
        }