Linq 读取简单的XML数据

public class XmlCountryRepository : ICountryRepository
{
private static List<CountryData> countryList = null;

static XmlCountryRepository()
{
XDocument loadedData = XDocument.Load("CountriesXML.xml");

var data = from query in loadedData.Descendants("Country")
select new CountryData
{
Name = (string)query.Element("Name"),
Flag = (string)query.Element("Flag"),
Description = (string)query.Element("Description"),
Capital = (string)query.Element("Capital"),
ID = (int)query.Element("ID"),
};
countryList = data.ToList();
}

public IList<CountryData> GetCountryList()
{
return countryList;
}

public CountryData GetCountryById(int id)
{
return countryList.FirstOrDefault(c => c.ID == id);
}
}

<Countries>
<Country>
<Name>Germany</Name>
<Flag>../Images/Germany.png</Flag>
<ID>1</ID>
<Description>Germany Description</Description>
<Capital>Berlin</Capital>
</Country>
<Country>
<Name>Grece</Name>
<Flag>../Images/Greece.png</Flag>
<ID>2</ID>
<Description>Grece Description</Description>
<Capital>Athens</Capital>
</Country>
<Country>
<Name>France</Name>
<Flag>../Images/France.png</Flag>
<ID>3</ID>
<Description>France Description</Description>
<Capital>Paris</Capital>
</Country>
<Country>
<Name>Italy</Name>
<Flag>../Images/Italy.png</Flag>
<ID>4</ID>
<Description>Italy Description</Description>
<Capital>Rome</Capital>
</Country>
<Country>
<Name>Spain</Name>
<Flag>../Images/Spain.png</Flag>
<ID>5</ID>
<Description>Spain Description</Description>
<Capital>Madrid</Capital>
</Country>
<Country>
<Name>UK</Name>
<Flag>../Images/UK.png</Flag>
<ID>6</ID>
<Description>UK Description</Description>
<Capital>London</Capital>
</Country>
</Countries>