CmsWeb.Areas.OnlineReg.Models.OnlineRegModel.AddPeopleToTransaction C# (CSharp) Method

        private void AddPeopleToTransaction()
        {
            listMailAddress = GetEmailList();
            var participants = GetParticipants(listMailAddress);
            var transactionPeople = new List<TransactionPerson>();
            foreach (var p in List)
            {
                if (p.PeopleId == null)
                    continue;
                if (transactionPeople.Any(pp => pp.PeopleId == p.PeopleId))
                    continue;
                var tp = new TransactionPerson
                {
                    PeopleId = p.PeopleId.Value,
                    Amt = p.TotalAmount(),
                    OrgId = p.orgid ?? Orgid
                };
                tp.Donor = Transaction.Donate > 0 && p == List[donor ?? 0];
                transactionPeople.Add(tp);
            }

            if (SupportMissionTrip && GoerId == _list[0].PeopleId)
            {
                // reload transaction because it is not in this context
                var om = DbUtil.Db.OrganizationMembers.SingleOrDefault(mm => mm.PeopleId == GoerId && mm.OrganizationId == Orgid);
                if (om != null && om.TranId.HasValue)
                    Transaction.OriginalId = om.TranId;
            }
            else
            {
                Transaction.OriginalTrans.TransactionPeople.AddRange(transactionPeople);
            }
            Transaction.Emails = listMailAddress.EmailAddressListToString();
            Transaction.Participants = participants;
            Transaction.TransactionDate = DateTime.Now;
        }