private void LoadDSVatTu() { if (chitietDH.Count > 0) { chitietDH.Clear(); } DataTable dt = PhieuNhap.DSVatTu(cmbDonDDH.SelectedValue.ToString()); if (dt != null) { cmbMaVT.ValueMember = "MAVT"; cmbMaVT.DisplayMember = "TENVT"; cmbMaVT.DataSource = dt; LoadCTDDHToList(dt); txtSoLuongDat.Text = chitietDH[0].Soluong.ToString(); txtSoLuongNhap.Text = chitietDH[0].Soluong.ToString(); } }