C＃XDocument从XML获取所有图像，并在LongListSelector中显示它们

我有一个问题，我试图从XML中获取所有“缩略图”图像链接，然后在LongListSelector中显示它们。

这是我的LongListSelector代码：

<phone:LongListSelector LayoutMode="Grid" GridCellSize="180,180" Margin="0,0,-12,0" ItemsSource="{Binding}">
                <phone:LongListSelector.ItemTemplate>
                    <DataTemplate>
                        <Grid Background="{StaticResource PhoneAccentBrush}" Margin="5">
                            <StackPanel>
                                    <Image Source="{Binding Images}"></Image>
                            </StackPanel>
                        </Grid>
                    </DataTemplate>
                </phone:LongListSelector.ItemTemplate>
                </phone:LongListSelector>

和我的DataContext：

this.DataContext = gd.GetGameItems;

读取xml和存储数据的代码：

var feedXml = XDocument.Parse(e.Result);

            var gameData = feedXml.Root.Descendants("Game").Select(x => new GetGame
            {
                ID = (int)x.Element("id"),
                GameTitle = (string)x.Element("GameTitle"),
                Platform = (string)x.Element("Platform"),
                ReleaseDate = (string)x.Element("ReleaseDate"),
                Images = new Uri(GetImages(x)),
            })
              .ToList();
            foreach (var item in gameData) GetGameItems.Add(item);

private ObservableCollection<GetGame> _GetGameItems = new ObservableCollection<GetGame>();
    public ObservableCollection<GetGame> GetGameItems
    {
        get
        {
            return this._GetGameItems;
        }
    }

public class GetGame
{
    public int ID { get; set; }
    public string GameTitle { get; set; }        
    public string Platform { get; set; }
    public string ReleaseDate { get; set; }
    public Uri Images { get; set; }
}

这是我试图从中获取所有图像的地方，现在我只能从一个图像链接中获取：

 private static string GetImages(XElement gameNode)
    {
        return "http://thegamesdb.net/banners/" + (string)gameNode.Descendants("boxart")
                               .FirstOrDefault().Attribute("thumb");
    }

这是XML：

    <Data>
  <baseImgUrl>http://thegamesdb.net/banners/</baseImgUrl>
  <Game>
    <id>2</id>
    <GameTitle>Crysis</GameTitle>
     <PlatformId>1</PlatformId>
     <Platform>PC</Platform>
     <ReleaseDate>11/13/2007</ReleaseDate>
     <Overview>
     From the makers of Far Cry, Crysis offers FPS fans the best-looking, most highly-        evolving gameplay, requiring the player to use adaptive tactics and total customization of    weapons and armor to survive in dynamic, hostile environments including Zero-G. Earth, 2019. A team of US scientists makes a frightening discovery on an island in the South China Sea. All contact with the team is lost when the North Korean Government quickly seals off the area. The United States responds by dispatching an elite team of Delta Force Operators to recon the situation. As tension rises between the two nations, a massive alien ship reveals itself in the middle of the island. The ship generates an immense force sphere that freezes a vast portion of the island and drastically alters the global weather system. Now the US and North Korea must join forces to battle the alien menace. With hope rapidly fading, you must fight epic battles through tropical jungle, frozen landscapes, and finally into the heart of the alien ship itself for the ultimate Zero G showdown.
    </Overview>
<ESRB>M - Mature</ESRB>
<Genres>
<genre>Shooter</genre>
</Genres>
<Players>4+</Players>
<Co-op>No</Co-op>
<Youtube>http://www.youtube.com/watch?v=i3vO01xQ-DM</Youtube>
<Publisher>Electronic Arts</Publisher>
<Developer>Crytek</Developer>
<Rating>8.1111</Rating>
<Images>
  <fanart>
    <original width="1920" height="1080">fanart/original/2-1.jpg</original>
    <thumb>fanart/thumb/2-1.jpg</thumb>
  </fanart>
  <fanart>
    <original width="1920" height="1080">fanart/original/2-2.jpg</original>
    <thumb>fanart/thumb/2-2.jpg</thumb>
  </fanart>
  <fanart>
    <original width="1920" height="1080">fanart/original/2-3.jpg</original>
    <thumb>fanart/thumb/2-3.jpg</thumb>
  </fanart>
  <fanart>
    <original width="1920" height="1080">fanart/original/2-4.jpg</original>
    <thumb>fanart/thumb/2-4.jpg</thumb>
  </fanart>
  <fanart>
    <original width="1920" height="1080">fanart/original/2-5.jpg</original>
    <thumb>fanart/thumb/2-5.jpg</thumb>
  </fanart>
  <fanart>
    <original width="1920" height="1080">fanart/original/2-6.jpg</original>
    <thumb>fanart/thumb/2-6.jpg</thumb>
  </fanart>
  <boxart side="back" width="1525" height="2162" thumb="boxart/thumb/original/back/2-1.jpg">boxart/original/back/2-1.jpg</boxart>
  <boxart side="front" width="1525" height="2160" thumb="boxart/thumb/original/front/2-1.jpg">boxart/original/front/2-1.jpg</boxart>
  <banner width="760" height="140">graphical/2-g2.jpg</banner>
  <banner width="760" height="140">graphical/2-g3.jpg</banner>
  <screenshot>
    <original width="1920" height="1080">screenshots/2-1.jpg</original>
    <thumb>screenshots/thumb/2-1.jpg</thumb>
  </screenshot>
  <clearlogo width="400" height="95">clearlogo/2.png</clearlogo>
</Images>
</Game>
</Data>

我希望有人可以提供帮助。