public frmSuaHocSinh(HocSinh hs) { InitializeComponent(); init = new Init(cbKhoaHoc, cbKhoi, cbLop, cbTinhTrang, null, null); init.InitCombobox(); init.InitKhoa(); init.InitKhoi(); init.InitLop(); txtMaHS.Text = hs.MaHS.ToString(); txtHoTen.Text = hs.HoTen.ToString(); cbGT.Text = hs.GioiTinh.ToString(); txtNS.Value = hs.NgaySinh; txtSDT.Text = hs.SDT; txtEmail.Text = hs.Email.ToString(); txtDiaChi.Text = hs.DiaChi.ToString(); cbTinhTrang.Text = hs.TinhTrang ? "Đang học" : "Thôi học"; var lophientai = init.lop.First(x => x.MaLop == hs.LopHienTai); cbKhoaHoc.Text = init.khoaHoc.First(x => x.NamHoc == lophientai.IdKhoaHoc).NamHoc.ToString(); init.getcbKhoi(lophientai.TenKhoi, cbKhoaHoc.Text, lophientai.TenLop); }