如何获取选定行的其中一列的一个值？

Question

 public void ProcessRequest (HttpContext context) {
        //string storySN = context.Request.QueryString["storySN"];
        string storySN = "q";
        int voteSum = 0;
            if (!string.IsNullOrEmpty(storySN))
            {
                BRBT_VoteInform br = new BRBT_VoteInform();
                string filter = string.Format("and 1=1 and storySN='{0}'", storySN);
                DsBT_VoteInform ds = br.GetSome(filter);
                if (ds.BT_VoteInform.Rows.Count <= 0)
                {
                    context.Response.Write("<script>alert('没有该选项');</script>");
                }
                else 
                {
                    voteSum = Convert.ToInt32(ds.BT_VoteInform.Columns[2]);
                }
                context.Response.Write(voteSum);
        } 
    }
       如何将该行第3列的值赋给voteSum ？ 求大神指教。。

Answer 1

DsBT_VoteInform?
DataTable dt..
dt.Rows[0][""].ToString()//dt.Rows[0][2].ToString()