public void AddBook(Book book)
{
try
{
_Books.Add(book.Title, book);
}
catch (ModifyBookException e)
{
Console.WriteLine(e.Message);
}
}
public void DeleteBook(Book b)
{
try
{
if (b.BorrowedBy != null)
b.BorrowedBy.ReturnBook();
if (_Books.ContainsValue(b))
_Books.Remove(b.Title);
}
catch (DeleteBookException e)
{
Console.WriteLine(e.Message);
}
}