int HomeID = Convert.ToInt32(Request.QueryString["HomeID"]);
con = baglan.baglan();
SqlCommand SelectCar = new SqlCommand("Select * from Ev Where EvID='" + HomeID + "'", con);
SqlDataReader dr = SelectCar.ExecuteReader();
if (dr.Read())
{
dpSehir.SelectedValue = Convert.ToInt32(dr["SehirID"]).ToString();
dpSehir.SelectedItem.Text = dr["SehirAdi"].ToString();
dpIlce.SelectedValue = Convert.ToInt32(dr["IlceID"]).ToString();
dpIlce.SelectedItem.Text = dr["IlceAdi"].ToString();
}
dr.Dispose();
dr.Close();

kodlar bu sekilde dostum ?????