我要获取他的数据条数、并且在asp页面显示
         public string GetCountBySidAndTrainId(int sit, int tid)
        {
            string sql = "select count(*) from SitInfo where sittypeid = '"+sit+"' and trainid = '"+tid+"' and noid = 1";
            DataSet objset = new DataSet();
            objset = db.GetDataSet(sql);
            //这里要怎么返回？
        }
        页面怎么接收？