partial void Deletesach(sach instance);
partial void Updatesach(sach instance);
private void detach_saches(sach entity)
{
this.SendPropertyChanging();
entity.loai = null;
}
partial void Insertsach(sach instance);
private void attach_saches(sach entity)
{
this.SendPropertyChanging();
entity.loai = this;
}