trouble with serializing a class into xml

[alex bean]

I am having trouble getting a class to serialize the way I want it to.
I'm open to changing the class or dumping it altogether; I just need a way
to produce the last set of xml.

The following code produces the first set of xml.
I have tried to set the attributes of the myXmlNode class to produce the
last set of xml but I can't figure it out.
Can the last set of xml be achieved?

TIA!

[XmlRoot("Root",Namespace="http://my.ns.com")]
public class myXmlNode
{
public string[] ID;
}

/////////
[WebMethod]
public myXmlNode HelloWorld()
{
myXmlNode n = new myXmlNode();
//some db code
n.ID= new string[100];
int ord= 0;
while(rdr.Read())
{
id = (string)rdr.GetSqlString(0);
n.ID[ord] = id;
ord++;
}
rdr.Close();
return n;
}


This is what I'm getting:

<?xml version="1.0" encoding="utf-8" ?>
<Root xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://my.ns.com">
<ID>
<string>9780486406510</string>
<string>9780760748718</string>
<string>9781593081386</string>
<string>9781593083328</string>
<string>9780452274426</string>
<string>9780060934415</string>
<string>9781593080556</string>
<string>9780375701429</string>
<string>9780812574920</string>
<string>9780451526564</string>
<string>9780060197353</string>
</ID>
</Root>


This is what I want:

<?xml version="1.0" encoding="utf-8" ?>
<Root xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://my.ns.com">
<ID>9780486406510</ID>
<ID>9780760748718</ID>
<ID>9781593081386</ID>
<ID>9781593083328</ID>
<ID>9780452274426</ID>
<ID>9780060934415</ID>
<ID>9781593080556</ID>
<ID>9780375701429</ID>
<ID>9780812574920</ID>
<ID>9780451526564</ID>
<ID>9780060197353</ID>
</Root>