/// <summary>
        /// Loads the details of the selected book
        /// </summary>
        /// <returns>Detailed book</returns>
        public async Task LoadDetails()
        {
            BookManager bm     = new BookManager();
            string      keytmp = Book.OLID_key;

            Book = await bm.BookByOLID(Book.OLID_key);

            Book.OLID_key = keytmp;
        }