public Kunde Update(Kunde kunde)
{
using (AutoReservationContext context = new AutoReservationContext())
{
Kunde kundeFromList = context.Kunden.SingleOrDefault(k => k.Id == kunde.Id);
if (kundeFromList != default(Kunde))
{
context.Entry(kundeFromList).OriginalValues["RowVersion"] = kunde.RowVersion;
kundeFromList.CopyFrom(kunde);
try
{
context.SaveChanges();
if (context.Entry(kundeFromList).State == EntityState.Unchanged)
{
return(context.Kunden.Include(r => r.Reservationen).SingleOrDefault(k => k.Id == kunde.Id));
}
throw new DatabaseChangeException("Could not update kunde");
}
catch (DbUpdateConcurrencyException)
{
throw CreateOptimisticConcurrencyException(context, kundeFromList);
}
}
throw new EntityNotFoundException($"Could not find kunde with id {kunde.Id}");
}
}