asp.net Web Service, a list containing a list - asp.net

Question

I have an asp.net web service (.asmx) running on our server, it basically returns a result object which contains a list of users. The structure looks like this:
<?xml version="1.0" encoding="utf-8"?>
<soap:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
<soap:Body>
<getUsersResponse xmlns="http://www.mycompany.com/">
<getUsersResult>
<userList>
<clsUser>
<firstName>string</firstName>
<lastName>string</lastName>
<idNumber>int</idNumber>
</clsUser>
<clsUser>
<firstName>string</firstName>
<lastName>string</lastName>
<idNumber>int</idNumber>
</clsUser>
</userList>
<faultResponse>
<faultOccurred>boolean</faultOccurred>
<faultDescription>string</faultDescription>
</faultResponse>
</getUsersResult>
</getUsersResponse>
</soap:Body>
</soap:Envelope>
This works fine, but I would like to add a list to my clsUser class. So I would like to change it from this:
using System;
using System.Collections.Generic;
using System.Web;
[Serializable]
public class clsUser
{
public string firstName;
public string lastName;
public int idNUmber
}
To this:
using System;
using System.Collections.Generic;
using System.Web;
[Serializable]
public class clsUser
{
public string firstName;
public string lastName;
public int idNumber
public List<clsExtraData> extraDataList;
}
Where clsExtraData contains a few strings:
using System;
using System.Collections.Generic;
using System.Web;
[Serializable]
public class clsExtraData
{
public string description;
public string data;
}
So I would expect my structure to look something like the following:
<?xml version="1.0" encoding="utf-8"?>
<soap:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
<soap:Body>
<getUsersResponse xmlns="http://www.mycompany.com/">
<getUsersResult>
<userList>
<clsUser>
<firstName>string</firstName>
<lastName>string</lastName>
<idNumber>int</idNumber>
<extraDataList>
<description>string</description>
<data>string</data>
</extraDataList>
</clsUser>
<clsUser>
<firstName>string</firstName>
<lastName>string</lastName>
<idNumber>int</idNumber>
<extraDataList>
<description>string</description>
<data>string</data>
</extraDataList>
</clsUser>
</userList>
<faultResponse>
<faultOccurred>boolean</faultOccurred>
<faultDescription>string</faultDescription>
</faultResponse>
</getUsersResult>
</getUsersResponse>
</soap:Body>
</soap:Envelope>
But instead I get the following:
<?xml version="1.0" encoding="utf-8"?>
<soap:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
<soap:Body>
<getUsersResponse xmlns="http://www.mycompany.com/">
<getUsersResult>
<userList>
<clsUser>
<firstName>string</firstName>
<lastName>string</lastName>
<idNumber>int</idNumber>
<extraDataList xsi:nil="true" />
</clsUser>
<clsUser>
<firstName>string</firstName>
<lastName>string</lastName>
<idNumber>int</idNumber>
<extraDataList xsi:nil="true" />
</clsUser>
</userList>
<faultResponse>
<faultOccurred>boolean</faultOccurred>
<faultDescription>string</faultDescription>
</faultResponse>
</getUsersResult>
</getUsersResponse>
</soap:Body>
</soap:Envelope>
Our web service users will design their clients around this web service structure, if it's showing up with the <extraDataList xsi:nil="true" /> how will they know what fields to expect in the extraDataList? How can I get my web service structure looking as expected?

Answer 1

if you post the WSDL im pretty sure there is a link explaining the values and fields in extraDataList