partial void DeleteGioHang(GioHang instance);
partial void UpdateGioHang(GioHang instance);
private void detach_GioHangs(GioHang entity)
{
this.SendPropertyChanging();
entity.SanPham = null;
}
partial void InsertGioHang(GioHang instance);
private void attach_GioHangs(GioHang entity)
{
this.SendPropertyChanging();
entity.SanPham = this;
}