Create repeating elements in xml document

Question

Good day,
I have a problem with a project I am busy with. I am creating an XML document from a predefined schema. I am able to this with no problem for one level using this method:
XmlSerializerNamespaces ns = new XmlSerializerNamespaces();
XmlSerializer serializer = new XmlSerializer(typeof(UKFATCASubmissionFIReport));
TextWriter writer = new StreamWriter(destinationPath);
UKFATCASubmissionFIReport fatcaSub = new UKFATCASubmissionFIReport();
fatcaSub.SchemaVersion = schemaVersion;
//Initialize classes and objects
#region classes and objects
AccountDataType accountData = new AccountDataType();
AccountHolderCodeType accountHolderType = new AccountHolderCodeType();
MessageDataType messageData = new MessageDataType();
MonetaryType moneyType = new MonetaryType();
SubmissionType submissionData = new SubmissionType();
FIReturnActionType fireturnActionData = new FIReturnActionType();
AccountActionType accountActionData = new AccountActionType();
TINCodeType tinCode = new TINCodeType();
HolderTaxInfoType holderInfo = new HolderTaxInfoType();
//PaymentDataType paymentData = paymentDetails();
#endregion
//Monetary type
moneyType.Value = moneyTypeValue;
moneyType.currCode = currCode_Type.GBP;
//Create message data
messageData.FATCAUserId = FatcaUserID;
messageData.XMLTimeStamp = timeStamp;
messageData.MessageCategory = MessageType.NewSubmission;
fatcaSub.MessageData = messageData;
//Create submission data object
submissionData.ReportingPeriod = reportingPeriod;
submissionData.Item = messageRef;
fatcaSub.Item = submissionData;
//FI Return Action
fireturnActionData.Action = ActionType.New;
fireturnActionData.FIReturnRef = returnRef;
//FIReturnActionType[] fireturnItems = new FIReturnActionType[] { fireturnActionData };
//TIN Code Type
tinCode.TINCountryCode = countryCode;
tinCode.Value = tinCodeValue;
tinCode.TINCountryCodeSpecified = itemSpecified;
//TIN Information
holderInfo.ReportableJurisdiction = countryCode;
holderInfo.TIN = holderTIN;
holderInfo.TINCode = tinCode;
//ContactPersonInformation contactInfo = ContactInformation(holderInfo);
//Contact address
ContactAddressType contactAddress = new ContactAddressType();
contactAddress.StreetName = streetName;
contactAddress.City = contactCity;
contactAddress.CountryCode = holderInfo.ReportableJurisdiction;
//Person Details
ContactPersonInformation contactInfo = new ContactPersonInformation();
contactInfo.FirstName = firstName;
contactInfo.LastName = lastName;
contactInfo.Address = contactAddress;
contactInfo.HolderTaxInfo = holderInfo;
contactInfo.BirthDateSpecified = itemSpecified;
contactInfo.BirthDate = dateOfBirth;
PaymentMonetaryType paymentMonetary = new PaymentMonetaryType();
paymentMonetary.currCode = currCode_Type.GBP;
paymentMonetary.Value = paymentValue;
//Payment data object
PaymentDataType paymentData = new PaymentDataType();
paymentData.PaymentCode = PaymentCodeType.Item20;
paymentData.PaymentAmount = paymentMonetary;
//return paymentData;
//Account action
accountActionData.AccountRef = accountRef;
accountActionData.Action = ActionType.New;
//Account information array
//AccountData(paymentData, contactInfo, accountActionData, accountData, accountHolderType);
object[] accountItems = new object[] { accountActionData, accountNumber, paymentData, accountHolderType, contactInfo };
accountData.Items = accountItems;
ItemsChoiceType[] accountFieldNames = new ItemsChoiceType[] { ItemsChoiceType.AccountAction, ItemsChoiceType.AccountNumber, ItemsChoiceType.PaymentData, ItemsChoiceType.AccountHolderType, ItemsChoiceType.Person };
accountData.ItemsElementName = accountFieldNames;
//Financial Information Return main array
//FIReturn(submissionData, fireturnActionData, accountData);
FIReturnType fireturn = new FIReturnType();
object[] fiItems = new object[] { fireturnActionData, fiRegisterID, dueDilligenceInd, thresholdInd, accountData };
fireturn.Items = fiItems;
ItemsChoiceType1[] fiFieldnames = new ItemsChoiceType1[] { ItemsChoiceType1.FIReturnAction, ItemsChoiceType1.FIRegisterId, ItemsChoiceType1.DueDiligenceInd, ItemsChoiceType1.ThresholdInd, ItemsChoiceType1.AccountData };
fireturn.ItemsElementName = fiFieldnames;
FIReturnType[] fiData = new FIReturnType[] { fireturn };
//Map FI return data to submissionData
submissionData.FIReturn = fiData;
//Serialize the submission close the TextWriter
serializer.Serialize(writer, fatcaSub);
writer.Close();
Process.Visible = false;
MessageBox.Show("Processing Complete!", "Complete", MessageBoxButtons.OK, MessageBoxIcon.Information, MessageBoxDefaultButton.Button1);
Close();
The problem is that I would like fireturn to appear in the document more than once from a dataset. If I changed my code to this:
FIReturnType[] fiData = new FIReturnType[] { fireturn, fireturn, fireturn };
//Map FI return data to submissionData
submissionData.FIReturn = fiData;
I am able to get the three elements as required. How can I change my code to allow for a foreach statement for example?

Answer 1

I managed to change FIReturnType into a list as below. I have a sample datatable also. My code now creates the nodes as expected but the all contain the last item only. What do I need to change so that I get the correct values written?
DataTable dtTable = new DataTable();
dtTable.Columns.Add("FirstName", typeof(string));
dtTable.Columns.Add("Surname", typeof(string));
// Here we add five DataRows.
dtTable.Rows.Add("Test", "Test");
dtTable.Rows.Add("Two", "Three");
dtTable.Rows.Add("Four", "Five");
dtTable.Rows.Add("Six", "Seven");
dtTable.Rows.Add("Eight", "Nine");
List<FIReturnType> fiRetList = new List<FIReturnType>();
foreach (DataRow row in dtTable.Rows)
object fName = row["FirstName"];
object sName = row["Surname"];
contactInfo.FirstName = fName.ToString();
contactInfo.LastName = sName.ToString();
FIReturnType fireturn = new FIReturnType();
object[] fiItems = new object[] { fireturnActionData, fiRegisterID, dueDilligenceInd, thresholdInd, accountData };
fireturn.Items = fiItems;
ItemsChoiceType1[] fiFieldnames = new ItemsChoiceType1[] { ItemsChoiceType1.FIReturnAction, ItemsChoiceType1.FIRegisterId, ItemsChoiceType1.DueDiligenceInd, ItemsChoiceType1.ThresholdInd, ItemsChoiceType1.AccountData };
fireturn.ItemsElementName = fiFieldnames;
fiRetList.Add(new FIReturnType { Items = fiItems, ItemsElementName = fiFieldnames });
FIReturnType[] fiData = fiRetList.ToArray();
submissionData.FIReturn = fiData;