protected void Page_Load(object sender, EventArgs e)
        {
            int id = Convert.ToInt32(Request["loaitin"]);

            Rpbantin.DataSource = dt.LOAITIN_seclect(id);
            Rpbantin.DataBind();
            rpHIENTHI.DataSource = dt.NOIDUNGTT_SECLIEC_MLTIN(id);
            rpHIENTHI.DataBind();
        }