public async Task <IActionResult> OnPostAsync() { if (!ModelState.IsValid) { return(Page()); } _context.Attach(Author).State = EntityState.Modified; try { await _context.SaveChangesAsync(); } catch (DbUpdateConcurrencyException) { if (!AuthorExists(Author.ID)) { return(NotFound()); } else { throw; } } return(RedirectToPage("./Index")); }
public async Task <IActionResult> OnPostAsync() { if (!ModelState.IsValid) { return(Page()); } _context.Author.Add(Author); await _context.SaveChangesAsync(); return(RedirectToPage("./Index")); }
public async Task <IActionResult> OnPostAsync(int?id) { if (id == null) { return(NotFound()); } Author = await _context.Author.FindAsync(id); if (Author != null) { _context.Author.Remove(Author); await _context.SaveChangesAsync(); } return(RedirectToPage("./Index")); }
public async Task <IActionResult> OnPostAsync(int?id) { if (id == null) { return(NotFound()); } Book = await _context.Book .AsNoTracking() .FirstOrDefaultAsync(m => m.ID == id); if (Book != null) { _context.Book.Remove(Book); await _context.SaveChangesAsync(); } return(RedirectToPage("./Index")); }
public async Task <IActionResult> OnPostAsync(int?id) { if (!ModelState.IsValid) { return(Page()); } var bookToUpdate = await _context.Book.FindAsync(id); if (await TryUpdateModelAsync <Book>( bookToUpdate, "book", b => b.Title, b => b.AuthorID, b => b.Language, b => b.PublishYear, b => b.Publisher, b => b.Subject, b => b.DeweyNumber, b => b.DateAcquired)) { await _context.SaveChangesAsync(); return(RedirectToPage("./Index")); } PopulateAuthorsDropDownList(_context, bookToUpdate.AuthorID); return(Page()); }
public async Task <IActionResult> OnPostAsync() { if (!ModelState.IsValid) { return(Page()); } var emptyBook = new Book(); if (await TryUpdateModelAsync <Book>( emptyBook, "book", s => s.ID, s => s.AuthorID, s => s.Title, s => s.PublishYear)) { _context.Book.Add(emptyBook); await _context.SaveChangesAsync(); return(RedirectToPage("./Index")); } PopulateAuthorsDropDownList(_context, emptyBook.AuthorID); return(Page()); }