ArrayList for XML help

[tulielf]

Hi,

I've got no errors for compiling but I can't figure out why there isn't any stored output when I save them into a XML file.

thanks!

Current output

<?xml version="1.0" encoding="utf-8" ?> 
  <AirlineArray xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xsi:nil="true" />

Wanted output

<?xml version="1.0" encoding="utf-8"?>
<AirlineArray xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
  <airlineList>
    <RFQSave>
      <quotationId>1234</quotationId>
      <supplier>1301</supplier>
      <prodName>Singapore Airline</prodName>
      <classType>Economy Class</classType>
      <adultQuantity>4</adultQuantity>
      <childQuantity>4</childQuantity>
    </RFQSave>
   </airlineList>
</AirlineArray>

------------------------------------------------------------------------------------------------

Array to store RFQSave

public class AirlineArray
{
    public RFQSave[] airlineList;
}

RFQSave

public class RFQSave
{    
	public string quotationId;    
    public string supplier;    
    public string prodName;    
    public string classType;    
    public string adultQuantity;    
    public string childQuantity;    

    public RFQSave(string nid, string nsupplier, string nprodName, string nclassType,
        string nadultAmt, string nchildAmt)
    {
        quotationId = nid;
        supplier = nsupplier;
        prodName = nprodName;
        classType = nclassType;
        adultQuantity = nadultAmt;
        childQuantity = nchildAmt;
       
    }

    public RFQSave() { }
	
}

Main code

public partial class _Default : System.Web.UI.Page
{
    private int counter;
    private AirlineArray airline;
    private RFQSave airSave;

    protected void Page_Load(object sender, EventArgs e)
    {
        airline = new AirlineArray();
        counter = 0;        
    }

    protected void btnStore_Click(object sender, EventArgs e)
    {       

        if (ddlAirline.SelectedValue == "1301")
        {
            tbxName.Text = "Singapore Airline";
            lblWarning.Text = "";                   

            airSave = new RFQSave(tbxQuotationID.Text, ddlAirline.Text, tbxName.Text, ddlClass.Text, tbxdoulePrice.Text, tbxSingleQuantity.Text);

            //add airSave to the Airline RFQ
            RFQSave[] temp = new RFQSave[counter + 1];
            for (int i = 0; i < counter; i++)
            {
                temp[i] = airline.airlineList[i];
            }
            temp[counter] = airSave;
            counter++;
            airline.airlineList = temp;                        

            lblWarning.Text = "Sinagpore Airline Quotation Stored, ready for export!";
        }        

    }
        
    protected void btnSave_Click(object sender, EventArgs e)
    {        
        XmlWriterSettings settings = new XmlWriterSettings();
        settings.Indent = true;
        XmlWriter wrt = XmlWriter.Create("D://AirlineRFQ.xml", settings);
        XmlSerializer serializer = new XmlSerializer(typeof(AirlineArray));
        serializer.Serialize(wrt, airline);
        wrt.Close();

        lblWarning.Text = "Airline Quotation XML exported!";   
    
    }        
    }