private void detach_tbl_saches(tbl_sach entity)
{
this.SendPropertyChanging();
entity.tbl_linhvuc = null;
}
partial void Deletetbl_sach(tbl_sach instance);
partial void Inserttbl_sach(tbl_sach instance);
partial void Updatetbl_sach(tbl_sach instance);
private void attach_tbl_saches(tbl_sach entity)
{
this.SendPropertyChanging();
entity.tbl_tacgia = this;
}