C＃：数据透视项创建出错

Question

后PivotItem pivotItem = new PivotItem();我得到Additional information: The application called an interface that was marshalled for a different thread. (Exception from HRESULT: 0x8001010E (RPC_E_WRONG_THREAD))。它应该是什么？我很困惑它。

代码：

foreach (Source source in sources) 
{ 
    PivotItem pivotItem = new PivotItem(); /* At this point it falls. */ 
    pivotItem.Header = source.Name; 
    pivotItem.Margin = new Thickness(0, -10, 0, 0); 

    ListView listView = new ListView(); 
    listView.ItemsSource = source.Articles; 
    listView.ItemTemplate = (DataTemplate)Resources["MainItemTemplate"]; 
    listView.ItemClick += OpenArticle_ItemClick; 
    listView.SelectionMode = ListViewSelectionMode.None; 
    listView.IsItemClickEnabled = true; 

    pivotItem.Content = listView; 
    pvtMain.Items.Add(pivotItem); 
} 

Answer 1

基于之外，你似乎在试图创建比UI线程的线程上一个新PivotItem。您只能与UI线程中的UI元素进行交互。

您可能从事件处理程序中调用此代码，该事件处理程序未从UI事件触发。您应该能够通过使用Dispatcher切换回UI线程来解决问题：

await Dispatcher.RunAsync(CoreDispatcherPriority.Normal,() => 
{ 
    foreach (Source source in sources) 
    { 
     PivotItem pivotItem = new PivotItem(); /* At this point it falls. */ 
     pivotItem.Header = source.Name; 
     pivotItem.Margin = new Thickness(0, -10, 0, 0); 

     ListView listView = new ListView(); 
     listView.ItemsSource = source.Articles; 
     listView.ItemTemplate = (DataTemplate)Resources["MainItemTemplate"]; 
     listView.ItemClick += OpenArticle_ItemClick; 
     listView.SelectionMode = ListViewSelectionMode.None; 
     listView.IsItemClickEnabled = true; 

     pivotItem.Content = listView; 
     pvtMain.Items.Add(pivotItem); 
    } 
});