ComException，而XAML Metro應用程序中的數據綁定

我在將ListView綁定到List項目時收到COM異常。這裏的例外是從第二行中拋出。「 'System.Runtime.InteropServices.COMException' 類型的第一次機會異常發生在APP.EXEComException，而XAML Metro應用程序中的數據綁定

附加信息：災難性故障（從HRESULT異常：0x8000FFFF（E_UNEXPECTED））」

Playlists = content.getPlayLists(); 
PlayListView.DataContext = Playlists;

XAML聲明綁定

<ListView x:Name="PlayListView" ItemsSource="{Binding ElementName=Playlists}" Background="AntiqueWhite" SelectionChanged="PlayListView_SelectionChanged" HorizontalAlignment="Left" Height="364" Margin="56,268,0,0" VerticalAlignment="Top" Width="308"> 
     <ListView.ItemTemplate> 
      <DataTemplate> 
       <StackPanel Orientation="Horizontal"> 
        <TextBlock Text="{Binding Path=Name}"/> 
       </StackPanel> 
      </DataTemplate> 
     </ListView.ItemTemplate> 
    </ListView>

我簡化了PlayList只有2個字符串，但仍然有同樣的問題。

public class PlayList 
{ 
    private string playListName; 
    private string description; 
    private DateTime dateTimeCreated; 
    private int numTracks; 
    private List<Track> tracks; 
    private string id; 

    public string Name 
    { 
     get { return playListName; } 
     set { playListName = value; } 
    } 

    public string Description 
    { 
     get { return description; } 
     set { description = value; } 
    } 

    public DateTime CreatedDate 
    { 
     get { return dateTimeCreated; } 
     set { dateTimeCreated = value; } 
    } 

    public int NumberOfTracks 
    { 
     get { return numTracks; } 
     set { numTracks = value; } 
    } 

    public List<Track> Tracks 
    { 
     get { return tracks; } 
     set { tracks = value; } 
    } 

    public String Id 
    { 
     get { return id; } 
     set { id = value; } 
    } 
}

來源

2012-02-01 Overture

嗯，有些事情永遠不會改變，COM錯誤報告總是相當差。真正的災難。 – 2012-02-01 01:03:43

問題是由於未在主線程上設置UI元素。我修復了它使用

PlayListView.Dispatcher.Invoke(Windows.UI.Core.CoreDispatcherPriority.Normal, (s, a) => 
{ 
    PlayListView.DataContext = Playlists; 
}, PlayListView, null);

來源

2012-02-07 17:10:42 Overture

ComException，而XAML Metro應用程序中的數據綁定

回答

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