public async Task <IActionResult> Edit(int id, [Bind("AuthorId,LastName,FirstName,Phone,Address,City,State,Zip,EmailAddress")] Author author)
        {
            if (id != author.AuthorId)
            {
                return(NotFound());
            }

            if (ModelState.IsValid)
            {
                try
                {
                    _context.Update(author);
                    await _context.SaveChangesAsync();
                }
                catch (DbUpdateConcurrencyException)
                {
                    if (!AuthorExists(author.AuthorId))
                    {
                        return(NotFound());
                    }
                    else
                    {
                        throw;
                    }
                }
                return(RedirectToAction(nameof(Index)));
            }
            return(View(author));
        }
        public async Task <IActionResult> Edit(int id, [Bind("BookId,Title,Type,PubId,Price,Advance,Royalty,YtdSales,Notes,PublishedDate")] Book book)
        {
            if (id != book.BookId)
            {
                return(NotFound());
            }

            if (ModelState.IsValid)
            {
                try
                {
                    _context.Update(book);
                    await _context.SaveChangesAsync();
                }
                catch (DbUpdateConcurrencyException)
                {
                    if (!BookExists(book.BookId))
                    {
                        return(NotFound());
                    }
                    else
                    {
                        throw;
                    }
                }
                return(RedirectToAction(nameof(Index)));
            }
            ViewData["PubId"] = new SelectList(_context.Publisher, "PubId", "PubId", book.PubId);
            return(View(book));
        }