如何处理MVVM中并行化任务的observecollection<>结果?

ObservableCollection<> . 所以我的代码是这样的:

private ObservableCollection<MyItem> _items;
public ObservableCollection<MyItem> Items
{
  get { return _items; }
  set
  {
    if (_items.Equals(value))
    {
      return;
    }
    _items = value;
    RaisePropertyChanged("Items");
  }
}

private void LoadData()
{
  Task task = Task.Factory.StartNew(() =>
  {
    ObservableCollection<MyItem> itms = _htmlParser.FetchData(...);

    Dispatcher.CurrentDispatcher.Invoke((Action)delegate
    {
      Items = itms;
    });
  });
}

Must create DependencySource on same Thread as the DependencyObject.

我正在使用mvvmlighttoolkit框架。我还试图将结果作为一条消息发送,但结果是相同的错误消息。有什么想法或建议吗?

public class MyItem
{
  public string Id { get; set; }
  public string Name { get; set; }
  public BitmapImage Image { get; set; }  // <--- A big No No because it inherits from the DependencyObject
  public Uri Uri { get; set; }
}

我换了衣服 BitmapImage 到 byte[] 数据类型。