Question

i want to retrive min and max value from dataset and those values use in for loop for display title in panel

    String sql = "select  title, song_id from up_song where Song_type='Mp3 Tracks' ";
    SqlDataAdapter adpt = new SqlDataAdapter(sql, cn);
    DataSet ds = new DataSet();
    adpt.Fill(ds, "title");

so here i want to find min and max value of song id…
here m is max value and k min value i have no idea …that how i select k and m…?

        for (i = m; i >= k; --i)
        {
            try
            {
                hp[i] = new HyperLink();
                hp[i].ID = "hp" + i;
                hp[i].Text = ds.Tables["title"].Rows[i].ItemArray[0].ToString();
                hp[i].NavigateUrl = "Downloadpage.aspx";
                hp[i].ForeColor = System.Drawing.Color.White;
                Panel1.Controls.Add(hp[i]);
                Panel1.Controls.Add(new LiteralControl("<br>"));
                HttpCookie coo = new HttpCookie("song");
                coo["sogtit"] = ds.Tables["title"].Rows[i].ItemArray[0].ToString();
                Response.Cookies.Add(coo);
            }
            catch (Exception ex)
            {
                Response.Write(ex.Message);
            }
        }

Answer 1

With using Linq extension methods:

int minSongId = ds.Tables["title"].AsEnumerable()
                  .Min(r => r.Field<int>("song_id"));
int maxSongId = ds.Tables["title"].AsEnumerable()
                  .Max(r => r.Field<int>("song_id"));