Populate ArrayList from Database using C# .Net

TRy This

string strConn = ConfigurationManager.ConnectionStrings["Connection"].ConnectionString.ToString();
  SqlConnection con = new SqlConnection(strConn);

       ArrayList ar = new ArrayList();       
       SqlCommand cmd = new SqlCommand("select * from Test", con);
       /SqlDataAdapter da = new SqlDataAdapter(cmd);
       DataTable dt = new DataTable();
       dt.Clear();
       con.Open();
       da.Fill(dt);
       con.Close();
       //Below code i bind first column values in arraylist
       for (int i = 0; i <= dt.Rows.Count - 1; i++)
       {
           ar.Add(dt.Rows[i][1].ToString());
       }
       ///Write in page
       /foreach (object eachelt in ar)
      {
//Display Content Which u want to display
}