private void detach_NguoiChois(NguoiChoi entity)
{
this.SendPropertyChanging();
entity.TaiKhoan = null;
}
partial void UpdateNguoiChoi(NguoiChoi instance);
partial void DeleteNguoiChoi(NguoiChoi instance);
partial void InsertNguoiChoi(NguoiChoi instance);