private void btnOrder_Click(object sender, EventArgs e)
{
//获取订单号
int orderid = Convert.ToInt32(this.Tag);
//获取总价格
int totalprice = Convert.ToInt32(lblMoney.Text);
//更新订单
if (bll.CommitOrder(orderid, totalprice))
{
MessageBox.Show("下单成功！");
}
}