Update XML with C# using Linq

MY XML FILE STRUCTURE <items> <item> <itemID>1</itemID> <isGadget>True</isGadget> <name>Star Wars Figures</name> <text1>LukeSkywalker</text1> </item> </items> TO READ DATA FROM XML BY ITEMID XDocument xmlDoc = XDocument.Load(HttpContext.Current.Server.MapPath("data.xml")); var items = from item in xmlDoc.Descendants("item") where item.Element("itemID").Value == itemID select new { itemID = item.El