public BookItem CreateBookItem(string masterId, decimal?price, string currentState = "可借用")
{
BookMaster bookMaster = this.BookMasters.Where(p => p.MasterId == masterId).FirstOrDefault();
if (bookMaster == null || price < 0)
{
return(null);
}
return(CreateBookItem(bookMaster, price, currentState));
}
/// <summary>
/// 一次性创建多本内容相同的书
/// </summary>
/// <param name="master">BookMaster,书的定义</param>
/// <param name="bookPrice">书的价格</param>
/// <param name="buyBookCount">买入书的数量</param>
/// <param name="currentState">书当前的状态</param>
/// <returns>创建出来的书</returns>
public List <BookItem> CreateBookItems(BookMaster master, decimal?bookPrice, int buyBookCount, string currentState = "可借用")
{
List <BookItem> result = new List <BookItem>();
for (int i = 0; i < buyBookCount; i++)
{
var item = CreateBookItem(master, bookPrice, currentState);
result.Add(item);
}
return(result);
}
public BookItem CreateBookItem(BookMaster master, decimal?price, string currentState = "可借用")
{
BookItem bookItem = new BookItem();
bookItem.BookMaster = master;
bookItem.Price = price;
bookItem.CurrentState = currentState;
bookItem.BuyDate = DateTime.Now;
bookItem.BookId = new Guid().ToString();
this.BookList.Add(bookItem);
return(bookItem);
}
