// To protect from overposting attacks, enable the specific properties you want to bind to, for // more details, see https://aka.ms/RazorPagesCRUD. public async Task <IActionResult> OnPostAsync() { if (!ModelState.IsValid) { ViewData["PublisherID"] = new SelectList(_context.Set <Publisher>(), "ID", "PublisherName"); return(Page()); } _context.book.Add(book); await _context.SaveChangesAsync(); return(RedirectToPage("./Index")); }
public async Task <IActionResult> OnGetAsync(int?id) { if (id == null) { return(NotFound()); } book = await _context.book.FirstOrDefaultAsync(m => m.ID == id); if (book == null) { return(NotFound()); } ViewData["PublisherID"] = new SelectList(_context.Set <Publisher>(), "ID", "PublisherName"); return(Page()); }