private string Getppap()
        {
            Json jsonResult = new Json();

            try
            {
                var list = ms.dtType();
                jsonResult.Success   = true;
                jsonResult.Msg       = "";
                jsonResult.Result    = list;
                jsonResult.PageCount = 0;
                jsonResult.RowCount  = list.Rows.Count;
            }
            catch (Exception ex)
            {
                jsonResult.Success = false;
                jsonResult.Msg     = "获取用户分页列表异常:" + ex.Message;
            }

            string strJson = JsonConvert.SerializeObject(jsonResult);

            return(strJson);
        }