private void ToolStripMenuItemAddRelationToItem_Click(object sender, EventArgs e)
        {
            FrmSelectItemSKU frmSelectSKU = new FrmSelectItemSKU();

            frmSelectSKU.ShowDialog();

            string itemSKU = frmSelectSKU.SKU;

            if (itemSKU == null || itemSKU == "")
            {
                return;
            }

            DataGridViewSelectedRowCollection selectedRows = this.dataGridViewAllOrders.SelectedRows;

            foreach (DataGridViewRow row in selectedRows)
            {
                String orderLineItemId    = row.Cells[OrderDgv_OrderLineItemIndex].Value.ToString();
                EbayTransactionType trans = EbayTransactionDAL.GetOneTransaction(orderLineItemId);
                if (trans == null)
                {
                    return;
                }

                EbayTransactionDAL.UpdateTransactionItemSKU(trans.TransactionId, itemSKU);
                row.Cells[OrderDgv_ItemSKUIndex].Value = itemSKU;
            }


            MessageBox.Show("订单关联商品sku成功", "恭喜", MessageBoxButtons.OK, MessageBoxIcon.Information);
        }