public JsonResult BorrowBook(string BookId, string bookName, string bookAuthor, string bookPrice, string bookPic, string userId)
{
RecordDAO recordDAO = new RecordDAO();
BookDAO bookDAO = new BookDAO();
Book book = new Book();
Record record = new Record();
book.BookId = int.Parse(BookId);
book.BookName = bookName;
book.BookAuthor = bookAuthor;
book.BookPrice = bookPrice;
book.BookPic = bookPic;
book.Status = 0;
bookDAO.Update(book);
int count = recordDAO.Insert(int.Parse(BookId), userId);
return(Json(1, JsonRequestBehavior.AllowGet));
}