private void LoadComboBoxLoaiPhong() { try { DataTable dtTableLoaiPhong = new DataTable(); dtTableLoaiPhong = loaiPhongBUS.GetAll(); cbo_LoaiPhong.DataSource = dtTableLoaiPhong; cbo_LoaiPhong.ValueMember = "MA_LOAI_PHONG"; cbo_LoaiPhong.DisplayMember = "TEN_LOAI_PHONG"; } catch (Exception exception) { MessageBox.Show(exception.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error); } }