public string GenerateRbr() { string drawgift = string.Empty; string bonusitems = string.Empty; string specialitems = string.Empty; for (int i = 0; i < 5; i++) { Gift gift = DrawItems?.ElementAtOrDefault(i); drawgift += $" {(gift == null ? "-1.0" : $"{gift.VNum}.{gift.Amount}")}"; }