static void TestSave()
{
OrderForm order1 = new OrderForm("冰激凌", 10.0, 1);
OrderForm order2 = new OrderForm("苹果", 1.0, 2);
OrderForm order3 = new OrderForm("香蕉", 0.8, 5);
OrderForm order4 = new OrderForm("香蕉", 0.8, 3);
OrderForm order5 = new OrderForm("冰激凌", 10.0, 3);
AccountBook book = new AccountBook();
book.AddOrder(order1);
book.AddOrder(order2);
book.AddOrder(order3);
book.AddOrder(order4);
book.AddOrder(order5);
ShowOrder(book, "冰激凌");
ShowOrder(book, "香蕉");
ShowOrder(book, "芝麻");
//book.SaveToFile();
book.SaveToFile_Stream();
}
