private void UPDATE_ORDER_DETAILS()
 {
     for (int i = 0; i < dataGridView_INVO_ITEMS.Rows.Count; i++)
     {
         int   ID_PRD       = int.Parse(dataGridView_INVO_ITEMS.Rows[i].Cells["ITEM_ID"].Value.ToString());
         float PRD_QTY      = float.Parse(dataGridView_INVO_ITEMS.Rows[i].Cells["ITEM_QTY"].Value.ToString());
         float QTY_BY_PRICE = float.Parse(dataGridView_INVO_ITEMS.Rows[i].Cells["ITEM_TOTAL"].Value.ToString());
         float PRD_PRICE    = float.Parse(dataGridView_INVO_ITEMS.Rows[i].Cells["ITEM_PRICE"].Value.ToString());
         ORD.UPDATE_ORDER_DETAILS(ID_ORDER, ID_PRD, PRD_QTY, QTY_BY_PRICE, PRD_PRICE);
     }
 }