//Keydown  marca
 private void tb_cod_mar_KeyDown(object sender, KeyEventArgs e)
 {
     if (e.KeyData == Keys.Up)
     {
         inv004_01 obj = new inv004_01();
         o_mg_glo_bal.mg_ads000_03(obj, this);
     }
 }
        //Buton marca
        private void tb_cod_mar_ButtonCustomClick(object sender, EventArgs e)
        {
            inv004_01 obj = new inv004_01();

            o_mg_glo_bal.mg_ads000_03(obj, this);
        }