// ham cap nhap
public void update(string mabanh, string manguyenlieu, float khoiluong)
{
ChiTietNguyenLieuBanh chiTietNguyenLieuBanh = db.ChiTietNguyenLieuBanhs.Single(p => p.MaBanh == mabanh && p.MaNguyenLieu == manguyenlieu);
chiTietNguyenLieuBanh.KhoiLuong = khoiluong;
db.SubmitChanges();
}
// ham xoa hoa don
public void delete(string mabanh, string manguyenlieu)
{
ChiTietNguyenLieuBanh chiTietNguyenLieuBanh = db.ChiTietNguyenLieuBanhs.Single(p => p.MaBanh == mabanh && p.MaNguyenLieu == manguyenlieu);
db.ChiTietNguyenLieuBanhs.DeleteOnSubmit(chiTietNguyenLieuBanh);
db.SubmitChanges();
}
// ham thêm hoa don
public void insert(string mabanh, string manguyenlieu, float khoiluong)
{
ChiTietNguyenLieuBanh chiTietNguyenLieuBanh = new ChiTietNguyenLieuBanh();
chiTietNguyenLieuBanh.MaBanh = mabanh;
chiTietNguyenLieuBanh.MaNguyenLieu = manguyenlieu;
chiTietNguyenLieuBanh.KhoiLuong = khoiluong;
db.ChiTietNguyenLieuBanhs.InsertOnSubmit(chiTietNguyenLieuBanh);
db.SubmitChanges();
}
