public void AddBook(Books book)
{
var index = _item.FindIndex(item => item.Id == book.Id);
if (index >= 0)
{
_item[index].Amount++;
}
else
{
book.Amount = 1;
_item.Add(book);
}
}
public BookStoreLibrary()
{
Potter1 = new Books
{
Id = 1,
BookName = "哈利波特第一集",
Price = 100,
Amount = 0
};
Potter2 = new Books
{
Id = 2,
BookName = "哈利波特第二集",
Price = 100,
Amount = 0
};
Potter3 = new Books
{
Id = 3,
BookName = "哈利波特第三集",
Price = 100,
Amount = 0
};
Potter4 = new Books
{
Id = 4,
BookName = "哈利波特第四集",
Price = 100,
Amount = 0
};
Potter5 = new Books
{
Id = 5,
BookName = "哈利波特第五集",
Price = 100,
Amount = 0
};
}
