Linq - xml 修改問題解决方法

Linq - xml 修改問題
以下是我的xml格式

<?xml version="1.0" encoding="utf-8"?>
<Root>
  <item>
  <Name>terst</Name>
  <Model>645</Model>
  </item>
  <item>
  <Name>terst2</Name>
  <Model>6425</Model>
  </item>
</Root>


如何透過linq修改資料 ?

[解决办法]
请详细看看这个帖子，介绍的很详细，LIQN对XML的增删改查基本操作
http://www.cnblogs.com/mingmingruyuedlut/archive/2011/01/27/1946239.html
[解决办法]
http://download.csdn.net/detail/chaichangaini/3718057
[解决办法]

C# code

 string xml = @"<?xml version='1.0' encoding='utf-8'?><Root>  <item>  <Name>terst</Name>  <Model>645</Model>  </item>  <item>  <Name>terst2</Name>  <Model>6425</Model>  </item></Root>";            XDocument doc = XDocument.Parse(xml);            if (doc != null && doc.Root != null)            {                Console.WriteLine("root Name:{0}", doc.Root.Name);                foreach (var item in doc.Root.Nodes())                {                    Console.WriteLine("\troot child Name:{0}", ((XElement)item).Name);                    foreach (var d in ((XElement)item).Nodes())                    {                        Console.WriteLine("\t\tName:{0},Value:{1}", ((XElement)d).Name, ((XElement)d).Value);                    }                }            }                        Console.WriteLine("编辑之后");            XElement el = new XElement("item1");            ((XElement)doc.Root.Nodes().Last()).AddAfterSelf(el);            if (doc != null && doc.Root != null)            {                Console.WriteLine("root Name:{0}", doc.Root.Name);                foreach (var item in doc.Root.Nodes())                {                    Console.WriteLine("\troot child Name:{0}", ((XElement)item).Name);                    foreach (var d in ((XElement)item).Nodes())                    {                        Console.WriteLine("\t\tName:{0},Value:{1}", ((XElement)d).Name, ((XElement)d).Value);                    }                }            }                 //doc.Save("fileName")