public void ThemDH(int MaKH, string MaDH, int thanhtien, DataGridView g, string diachi, string TinhThanh, string QuanHuyen)
{
DonHang D = new DonHang();
D.MaDonHang = MaDH;
D.MaKhachHang = MaKH;
D.ThanhTienDonHang = thanhtien;
D.NgayMuaHang = DateTime.Today;
D.DiaChiGiaoHang = diachi;
D.Tinh_ThanhPho = TinhThanh;
D.Quan_Huyen = QuanHuyen;
da.ThemDH(D);
for (int i = 0; i < g.Rows.Count; i++)
{
CTDH CT = new CTDH();
CT.MaDonHang = MaDH;
string a = (g.Rows[i].Cells[0].Value.ToString());
int Masp = da.TimMaSanPham(a);
CT.MaSanPham = Masp;
CT.Gia = int.Parse(g.Rows[i].Cells[1].Value.ToString());
CT.SoLuong = int.Parse(g.Rows[i].Cells[2].Value.ToString());
da.THEMCTDH(CT);
}
}