用Linq查询XML文件的问题

XML文件如下
XML code:

<?xml version="1.0" encoding="utf-8" ?>
<Hint>
<?xml version="1.0" encoding="utf-8" ?>
<Hint>
<Error ID="1">
<Error Title="发布新职位前请先填写企业基本信息" Url="http://foodatarian.com"/>
</Error>
<Error ID="2">
<Error Title="请先登录" Url="http://sohu.com"/>
</Error>
</Hint>
</Hint>


想用ID返回一条错误信息，再用两个变量把标题和网址返回到前台页面来

---

XDocument xmlFile = XDocument.Load("a.xml");
var query = from c in xmlFile.Elements("Hint").Elements("Error ")
select c;

或转对象
public static T DeserializeFile <T>(string FileName)
        {
            FileStream fs = new FileStream(FileName, FileMode.Open);
            XmlSerializer xs = new XmlSerializer(typeof(T));
            T o= (T)xs.Deserialize(fs);
            fs.Close();
            fs.Dispose();
            return o