ComException，而XAML Metro应用程序中的数据绑定

我在将ListView绑定到List项目时收到COM异常。这里的例外是从第二行中抛出。 “ 'System.Runtime.InteropServices.COMException' 类型的第一次机会异常发生在APP.EXEComException，而XAML Metro应用程序中的数据绑定

附加信息：灾难性故障（从HRESULT异常：0x8000FFFF（E_UNEXPECTED））”

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

XAML声明绑定

<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>

我简化了PlayList只有2个字符串，但仍然有同样的问题。

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; } 
    } 
}

来源

2012-02-01 Overture

嗯，有些事情永远不会改变，COM错误报告总是相当差。真正的灾难。 – 2012-02-01 01:03:43

问题是由于未在主线程上设置UI元素。我修复了它使用

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

来源

2012-02-07 17:10:42 Overture

ComException，而XAML Metro应用程序中的数据绑定

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