LINQ over XML

This example is also from th AppDev:

var doc = CreateDocument(); // returns an XDocument
var items = from item in doc.Descendants("Item")
            where (string)item.Parent.Attribute("Name") == "Breads"
            select item;

now transforming the xml to a new format:

XElement transformed = new XElement("items",
            from item in items
            select new XElement("item",
                   new XAttribute("ItemName", (string)item.Element("Name")),
                   new XAttribute("Price", (string)item.Element("Price))));