public User WinnerUser() => BookUsers?.FirstOrDefault(x => x.Status == DonationStatus.Donated)?.User;
public string Winner() => BookUsers?.FirstOrDefault(x => x.Status == DonationStatus.Donated)?.User?.Name ?? "";
public User WinnerUser() => BookUsers?.FirstOrDefault(x => x.Status == DonationStatus.Donated)?.User;
public string Winner() => BookUsers?.FirstOrDefault(x => x.Status == DonationStatus.Donated)?.User?.Name ?? "";