private void bunifuThinButton21_Click(object sender, EventArgs e) { int k = 1; if (comboBox1.Text == "" && bunifuMetroTextbox2.Text == "") { MessageBox.Show("Nhap ma chuyen de hoac ten chuyen de"); k = 0; } if (comboBox2.Text == "" && bunifuMetroTextbox1.Text == "") { MessageBox.Show("Nhap ma sinh vien hoac ten sinh vien"); k = 0; } if (comboBox1.Text == "" && bunifuMetroTextbox2.Text != "") { comboBox1.Text = ChuyenDe_BUS.laymacd(bunifuMetroTextbox2.Text).ToString(); } if (comboBox2.Text == "" && bunifuMetroTextbox1.Text != "") { comboBox2.Text = SinhVien_BUS.layMaSV(bunifuMetroTextbox1.Text).ToString(); } if (k == 1) { List <KetQua_DTO> listKQ = KetQua_BUS.loadKetQua(int.Parse(comboBox2.Text), int.Parse(comboBox1.Text), HocKy_BUS.layMaHK(namhoc.selectedValue, bunifuDropdown2.selectedIndex + 1)); thongtintracuudtgd.AutoGenerateColumns = false; thongtintracuudtgd.DataSource = listKQ; } }