//删除订单
private void button4_Click(object sender, EventArgs e)
{
Orders orders = new Orders();
string str1 = label2.Text;
string str2 = label3.Text;
for (int i = 0; i < service.mOrders.Count; i++)
{
if (service.mOrders[i].orderNumber == str1 && service.mOrders[i].theCustomer == str2)
{
orders = service.mOrders[i];
break;
}
}
service.DeleteOrder2(orders);
BindingSource bs = new BindingSource();
bs.DataSource = service;
bindingSerives.DataSource = bs;
}