public override int GetHashCode() { unchecked { var hashCode = Country?.GetHashCode() ?? 0; hashCode = (hashCode * 397) ^ (City?.GetHashCode() ?? 0); hashCode = (hashCode * 397) ^ (Street?.GetHashCode() ?? 0); hashCode = (hashCode * 397) ^ (ZipCode?.GetHashCode() ?? 0); hashCode = (hashCode * 397) ^ BoxNo.GetHashCode(); hashCode = (hashCode * 397) ^ (Type?.GetHashCode() ?? 0); return(hashCode); } }