public async Task <Card> AddAsync(Card card) { _context.Cards.Add(card); if (card.Visitor.Id != 0) { _context.Visitors.Attach(card.Visitor); } await _context.SaveChangesAsync(); return(card); }
public async Task <int> UpdateAsync(Visitor visitor) { _context.Entry(visitor).State = EntityState.Modified; return(await _context.SaveChangesAsync()); }