public Form1()
{
InitializeComponent();
service = OrderService.Import("../../s.xml");
orderBindingSource.DataSource = service.OrderList;
}
private void btn_import_Click(object sender, EventArgs e)
{
String path = Interaction.InputBox("请输入导入订单的路径", "输入字符串", "", 100, 100);
Service.Import(path);
}