private void BaoGiaTheoYC_Load(object sender, EventArgs e) { lhbus = new LoaiHangBUS(); hhbus = new HangHoaBUS(); List <LoaiHangDTO> lslh = lhbus.select(); List <HangHoaDTO> lshh = hhbus.select(); Load_Datagridview1(lshh); dataGridView1.Columns["MOTA"].Visible = false; dataGridView1.Columns["MANHASANXUAT"].Visible = false; dataGridView1.Columns["MALOAIHANG"].Visible = false; dataGridView1.Columns["SOLUONG"].Visible = false; comboBox1.DataSource = lslh; CurrencyManager myCurrencyManager = (CurrencyManager)this.BindingContext[comboBox1.DataSource]; myCurrencyManager.Refresh(); comboBox1.DisplayMember = "TenLoaiHang"; }