在WP7上顯示來自Web服務的JSON數據

Question

我想解析並顯示在我的應用中使用webclient檢索到的JSON數據。這裏是JSON字符串我想顯示

{"metadata":{"page":1,"perPage":23,"count":23},"results":[{"id":9,"name":"Breaks","slug":"breaks","subgenres":[]},{"id":10,"name":"Chill Out","slug":"chill-out","subgenres":[]},{"id":12,"name":"Deep House","slug":"deep-house","subgenres":[]},{"id":16,"name":"DJ Tools","slug":"dj-tools","subgenres":[]},{"id":1,"name":"Drum & Bass","slug":"drum-and-bass","subgenres":[]},{"id":18,"name":"Dubstep","slug":"dubstep","subgenres":[]},{"id":17,"name":"Electro House","slug":"electro-house","subgenres":[]},{"id":3,"name":"Electronica","slug":"electronica","subgenres":[]},{"id":40,"name":"Funk \/ R&B","slug":"funk-r-and-b","subgenres":[]},{"id":49,"name":"Glitch Hop","slug":"glitch-hop","subgenres":[]},{"id":8,"name":"Hard Dance","slug":"hard-dance","subgenres":[]},{"id":2,"name":"Hardcore \/ Hard Techno","slug":"hardcore-hard-techno","subgenres":[]},{"id":38,"name":"Hip-Hop","slug":"hip-hop","subgenres":[]},{"id":5,"name":"House","slug":"house","subgenres":[]},{"id":37,"name":"Indie Dance \/ Nu Disco","slug":"indie-dance-nu-disco","subgenres":[]},{"id":14,"name":"Minimal","slug":"minimal","subgenres":[]},{"id":39,"name":"Pop \/ Rock","slug":"pop-rock","subgenres":[]},{"id":15,"name":"Progressive House","slug":"progressive-house","subgenres":[]},{"id":13,"name":"Psy-Trance","slug":"psy-trance","subgenres":[]},{"id":41,"name":"Reggae \/ Dub","slug":"reggae-dub","subgenres":[]},{"id":11,"name":"Tech House","slug":"tech-house","subgenres":[]},{"id":6,"name":"Techno","slug":"techno","subgenres":[]},{"id":7,"name":"Trance","slug":"trance","subgenres":[]}]} 

UPDATE

現在我得到一個NullReferenceException當它到達foreach循環。出於某種原因，它不識別「數據」

// Deserialize the Data 
    void beatportTest_GetDataCompleted(object sender, OpenReadCompletedEventArgs e) 
    { 
     DataContractJsonSerializer serializer = null; 

     try 
     { 
      serializer = new DataContractJsonSerializer(typeof(ObservableCollection<Result>)); 
      ObservableCollection<Result> data = serializer.ReadObject(e.Result) as ObservableCollection<Result>; 

      // foreach loop to display data 
      foreach (Result genre in data) 
      { 
       string name = genre.name; 
       listGenres.Items.Add(name); 
      } 
     } 
     catch (Exception ex) 
     { 
      MessageBox.Show(ex.Message); 
     } 
    } 

這是我的類。

public class Genres 
    { 
     public Metadata metadata { get; set; } 
     public List<Result> results { get; set; } 
    } 

    public class Metadata 
    { 
     public int page { get; set; } 
     public int perPage { get; set; } 
     public int count { get; set; } 
    } 

    public class Result 
    { 
     public int id { get; set; } 
     public string name { get; set; } 
     public string slug { get; set; } 
     // public List<object> subgenres { get; set; } 
    } 

退出L.B的更新班'我需要做什麼才能使用「姓名」字段顯示所有流派的文本塊？下面是我的xaml。

 <controls:PanoramaItem x:Name="genres" Header="genres"> 
      <!--Single line list--> 
      <Grid 
       <ListBox x:Name="listGenres" Margin="0,95,0,0"> 
        <ListBox.ItemTemplate> 
         <DataTemplate> 
          <StackPanel Width="432" Height="78"> 
           <TextBlock Text="???" Style="{StaticResource PhoneTextExtraLargeStyle}" />          
          </StackPanel> 
         </DataTemplate> 
        </ListBox.ItemTemplate> 
       </ListBox>  
      </Grid>   
     </controls:PanoramaItem> 

再次感謝。

Answer 1

下面是我用來反序列化JSON字符串

public class Genres 
{ 
    public Metadata metadata; 
    public Result[] results; 
} 

public class Metadata 
{ 
    public int page; 
    public int perPage; 
    public int count; 
} 

public class Result 
{ 
    public int id; 
    public string name; 
    public string slug; 
    //public subgenre[] subgenres; 
} 


DataContractJsonSerializer serializer = new DataContractJsonSerializer(typeof(Genres)); 
Genres data = serializer.ReadObject(e.Result) as Genres;