线程锁定CollectionViewSource

Question

我添加了一个事件处理程序，我的代码，它打破了所有访问在SystemHTA班说：“因为不同的线程拥有它调用线程不能访问该对象的” CollectionViewSources。当我的课程“this.systemHTA = new SystemHTA（）;”被放置在DeviceManager_StateChanged（）函数的外部。

public partial class MainWindow : Window 
    { 
     private DeviceManager DeviceManager = DeviceManager.Instance; 
     public SystemHTA systemHTA; 

     public MainWindow() 
     { 
      InitializeComponent(); 
     } 

     private void Window_Loaded(object sender, RoutedEventArgs e) 
     { 
      DeviceManager.StateChanged += new EventHandler<DeviceManagerStateChangedEventArgs>(DeviceManager_StateChanged); 
      DeviceManager.Initialize(); 
     } 

     void DeviceManager_StateChanged(object sender, DeviceManagerStateChangedEventArgs e) 
     { 
      if (e.State == DeviceManagerState.Operational) 
      { 
       this.systemHTA = new SystemHTA(); 
      } 
     } 

     private void button1_Click(object sender, RoutedEventArgs e) 
     { 
      this.systemHTA.GetViewSourceTest(); 
     } 
    } 


    public class SystemHTA 
    { 
     private CollectionViewSource _deviceTestSource; 

     public SystemHTA() 
     { 
      _deviceTestSource = new CollectionViewSource(); 
      _deviceTestSource.Source = CreateLoadData<HWController>.ControllerCollection; 
     } 

     public void GetViewSourceTest() 
     { 
      ListCollectionView view = (ListCollectionView)_deviceTestSource.View; //This creates an error saying a thread already owns _deviceTestSource 
     } 
    } 

Answer 1

我最终用ObservableCollection替换CollectionViewSource，一切正常。

Answer 2

这不是关于“螺纹锁固”，但有关公知的问题，即，GUI（或WPF或WinForms的）不是线程并在调试建立有用于跨线程调用活性检查。

因此，您已经知道解决方案：在主线程上创建SystemHTA对象。你的问题可能会转移到从DeviceMgr的东西加载它，你可能不得不在这里使用Control.Dispatcher.Invoke()。