public frmDeTai() { InitializeComponent(); this.cMaDeTai.DataPropertyName = nameof(DeTai.MaDT); this.cTenDT.DataPropertyName = nameof(DeTai.TenDT); this.cLoaiDT.DataPropertyName = nameof(DeTai.LoaiDT); this.cNhom.DataPropertyName = nameof(DeTai.MaNhom); this.cGiaoVien.DataPropertyName = nameof(DeTai.MaGV); this.cNoiDung.DataPropertyName = nameof(DeTai.NoiDung); BindingSource source = new BindingSource(); source.DataSource = DeTaiController.getListDT(); this.dataGridView1.DataSource = source; // dgrDSSV.AutoGenerateColumns = false; List <Nhom> searchnhom = SinhVienController.getListNhom(); for (int i = 0; i < searchnhom.Count; i++) { this.cboNhom.Items.Add(searchnhom[i]); } List <GiaoVien> searchgiaovien = GiaoVienController.getListgiaovien(); for (int i = 0; i < searchgiaovien.Count; i++) { this.cboGiaoVien.Items.Add(searchgiaovien[i]); } }