how to filter the dataset and bind in the gridview

protected void Page_Load(object sender, EventArgs e)
   {
       SqlConnection con = new SqlConnection(@"Data Source=.;Initial Catalog=test;Integrated Security=True");
       string statment = "select item_code, Item_name, brand, size, section, price, Material, Qty, tax, tt  from Items ";
       SqlDataAdapter da = new SqlDataAdapter(statment, con);
       DataSet ds = new DataSet();
       da.Fill(ds);
       DataRow[] foundRows = ds.Tables[0].Select("item_code = 1", " item_code DESC", DataViewRowState.CurrentRows);
       //this is for create datatable with same schema like the orginal one .
       string statment2 = "select item_code, Item_name, brand, size, section, price, Material, Qty, tax, tt  from Items where  item_code = 0";
       SqlDataAdapter da2 = new SqlDataAdapter(statment2, con);
       DataTable dt = new DataTable();

       da2.Fill(dt);
       DataRow dr = dt.NewRow();
       foreach (DataRow row in foundRows)
       {
           dr[0] = row[0];
           dr[1] = row[1];
           dr[2] = row[2];
           dr[3] = row[3];
           dr[4] = row[4];
           dr[5] = row[5];
           dt.Rows.Add(dr);
       }
       con.Close();
       cmd.Dispose();
       GridView1.DataSource = dt;
       GridView1.DataBind();
   }