static public bool ReturnBookByReader(Book book, Reader reader)
{
using (var context = new LibraryDataContext())
{
if (book != null && reader != null)
{
if (CheckEventForBookAndReader(reader.reader_id, book.book_id))
{
AddEvent(DateTime.Today, false, book.book_id, reader.reader_id);
book.quantity += 1;
BookService.UpdateBookQuantity(book.book_id, (int)book.quantity);
return(true);
}
}
return(false);
}
}
static public bool BorrowBookForReader(Book book, Reader reader)
{
using (var context = new LibraryDataContext())
{
if (book != null && reader != null)
{
if (book.quantity > 0)
{
AddEvent(DateTime.Today, true, book.book_id, reader.reader_id);
book.quantity -= 1;
BookService.UpdateBookQuantity(book.book_id, (int)book.quantity);
return(true);
}
}
}
return(false);
}