public void processPaperbackBook(processBookCallDeligates processBook) { foreach (Book b in list) { if (b.Paperack) { processBook(b); } } }
static void Main(string[] args) { BookDb bookdb = new BookDb(); processBookCallDeligates pd = new processBookCallDeligates(sellBook); AddBook(bookdb); pd += RentBook; pd += scrapBook; bookdb.processPaperbackBook(pd); }