how to update the second element's attribute on XML? - c#-4.0

Question

May i know how to update the second element's attribute using linq to xml? I do write some code but it doesnt work, it only update the user attribute....I'm sorry for asking this kind simple question.
My XML:
<Settings>
<Settig>
<User id="1" username="Aplha"/>
<Location Nation="USA" State="Miami" />
<Email>user1#hotmail.com</Email>
</Setting>
</Settings>
My Cs :
public static void saveSetting(MainWindow main)
{
XDocument document = XDocument.Load("Setting.xml");
IEnumerable<XElement> query = from p in document.Descendants("User")
where p.Attribute("id").Value == "1"
select p;
foreach (XElement element in query)
{
string i = "New York";
element.SetAttributeValue("State", i);
}
document.Save("Setting.xml");
}

Answer 1

You want to select the Setting elements; you can still select on id=1, like this:
IEnumerable<XElement> query = from p in document.Descendants("Setting")
where p.Element("User").Attribute("id").Value == "1"
select p;
Then select the Location element before updating:
foreach (XElement element in query)
{
element.Element("Location").SetAttributeValue("State", "New York");
}