partial void Deletetb_itens_venda(tb_itens_venda instance);
partial void Updatetb_itens_venda(tb_itens_venda instance);
private void detach_tb_itens_venda(tb_itens_venda entity) { this.SendPropertyChanging(); entity.produto = null; }
partial void Inserttb_itens_venda(tb_itens_venda instance);
private void attach_tb_itens_venda(tb_itens_venda entity) { this.SendPropertyChanging(); entity.tb_venda = this; }