public void upd() { Tunnel.BLL.Tunnel_duty td = new Tunnel.BLL.Tunnel_duty(); Tunnel.Model.Tunnel_duty tdd = new Tunnel.Model.Tunnel_duty(); tdd.d_id = Convert.ToInt64(did); tdd.d_name = txtName.Text; tdd.d_depict = txtName2.Text; tdd.d_flag = DropDownList1.SelectedValue; td.Update(tdd); }