public Form1()
{
Order order1 = new Order("001", "mina", "鞋", 600);
Order order2 = new Order("002", "momo", "猪蹄", 20);
Order order3 = new Order("003", "jyh", "奶茶", 12);
Order order4 = new Order("004", "jyh", "鞋", 622);
Order order5 = new Order("005", "sana", "书", 48);
Order order6 = new Order("006", "sana", "帽子", 100);
service.Add(order1);
service.Add(order2);
service.Add(order3);
service.Add(order4);
service.Add(order5);
service.Add(order6);
InitializeComponent();
orderBindingSource.DataSource = service.orders;
}