private void ChangeOrder_Click(object sender, EventArgs e)
{
if (OrderId.Text == "" || CustomerId.Text == "" || CustomerName.Text == "" || GoodsId.Text == "" ||
GoodsName.Text == "" || GoodsPrice.Text == "" || Quantity.Text == "")
{
MessageBox.Show("请输入完整信息!");
return;
}
order.Details.ElementAt(j).Goods.Id = int.Parse(GoodsId.Text);
order.Details.ElementAt(j).Goods.Name = GoodsName.Text;
order.Details.ElementAt(j).Goods.Price = int.Parse(GoodsPrice.Text);
order.Details.ElementAt(j).Quantity = int.Parse(Quantity.Text);
orderService.Update(order);
MessageBox.Show("修改成功!");
}