// 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) { return(Page()); } _context.Attach(ToDoItem).State = EntityState.Modified; try { await _context.SaveChangesAsync(); } catch (DbUpdateConcurrencyException) { if (!ToDoItemExists(ToDoItem.id)) { return(NotFound()); } else { throw; } } return(RedirectToPage("../Index")); }