C# “调用线程无法访问此对象，因为其他线程拥有它”

我有一个WPF应用程序，它使用多线程来执行通知。但是我遇到了调用线程无法访问这个对象的问题，因为它是另一个线程拥有的。例外

加载主窗口后，我将为通知窗口创建一个新线程

private void RibbonWindow_Loaded(object sender, RoutedEventArgs rae)
{
    Thread newWindowThread = new Thread(new ThreadStart(() =>
    {
        var reminders = new List<Reminder>();

        // Go to the database to get active reminders...

        var notificationsViewModel = new NotificationsViewModel(reminders);
        var notificationsView = new NotificationsView();
        notificationsView.DataContext = notificationsViewModel;
        var checkAccess = notificationsView.Dispatcher.CheckAccess();

        if (checkAccess)
        {
            notificationsView.Show();
        }

        System.Windows.Threading.Dispatcher.Run();
    }));

    newWindowThread.IsBackground = true;
    newWindowThread.SetApartmentState(ApartmentState.STA);
    newWindowThread.Start();
}

视图模型和要绑定的模型的构造函数

public NotificationsViewModel(List<ReminderCommon> reminders)
{
    this.Reminders = reminders;

    this.ReminderModel = reminders.First();
}

public ReminderCommon ReminderModel
{
    get
    {
        return this.m_ReminderModel;
    }
    set
    {
        this.m_ReminderModel = value;

        base.OnPropertyChanged("ReminderModel");
    }
}

例外情况详细信息

at System.Windows.Threading.Dispatcher.VerifyAccess()
at System.Windows.DependencyObject.GetValue(DependencyProperty dp)
at System.Windows.Media.SolidColorBrush.get_Color()
at System.Windows.Controls.Border.ArrangeOverride(Size finalSize)
at System.Windows.FrameworkElement.ArrangeCore(Rect finalRect)
at System.Windows.UIElement.Arrange(Rect finalRect)
at System.Windows.Controls.Primitives.BulletDecorator.ArrangeOverride(Size arrangeSize)
at System.Windows.FrameworkElement.ArrangeCore(Rect finalRect)
at System.Windows.UIElement.Arrange(Rect finalRect)
at System.Windows.Controls.Control.ArrangeOverride(Size arrangeBounds)
at System.Windows.FrameworkElement.ArrangeCore(Rect finalRect)
at System.Windows.UIElement.Arrange(Rect finalRect)
at System.Windows.Controls.StackPanel.ArrangeOverride(Size arrangeSize)
at System.Windows.FrameworkElement.ArrangeCore(Rect finalRect)
at System.Windows.UIElement.Arrange(Rect finalRect)
at System.Windows.Controls.Border.ArrangeOverride(Size finalSize)
at System.Windows.FrameworkElement.ArrangeCore(Rect finalRect)
at System.Windows.UIElement.Arrange(Rect finalRect)
at System.Windows.Controls.Grid.ArrangeOverride(Size arrangeSize)
at System.Windows.FrameworkElement.ArrangeCore(Rect finalRect)
at System.Windows.UIElement.Arrange(Rect finalRect)
at MS.Internal.Helper.ArrangeElementWithSingleChild(UIElement element, Size arrangeSize)
at System.Windows.Controls.ContentPresenter.ArrangeOverride(Size arrangeSize)
at System.Windows.FrameworkElement.ArrangeCore(Rect finalRect)
at System.Windows.UIElement.Arrange(Rect finalRect)
at System.Windows.Documents.AdornerDecorator.ArrangeOverride(Size finalSize)
at System.Windows.FrameworkElement.ArrangeCore(Rect finalRect)
at System.Windows.UIElement.Arrange(Rect finalRect)
at System.Windows.Controls.Border.ArrangeOverride(Size finalSize)
at System.Windows.FrameworkElement.ArrangeCore(Rect finalRect)
at System.Windows.UIElement.Arrange(Rect finalRect)
at System.Windows.Window.ArrangeOverride(Size arrangeBounds)
at System.Windows.FrameworkElement.ArrangeCore(Rect finalRect)
at System.Windows.UIElement.Arrange(Rect finalRect)
at System.Windows.Interop.HwndSource.SetLayoutSize()
at System.Windows.Interop.HwndSource.set_RootVisualInternal(Visual value)
at System.Windows.Interop.HwndSource.set_RootVisual(Visual value)
at System.Windows.Window.SetRootVisual()
at System.Windows.Window.SetRootVisualAndUpdateSTC()
at System.Windows.Window.SetupInitialState(Double requestedTop, Double requestedLeft, Double requestedWidth, Double requestedHeight)
at System.Windows.Window.CreateSourceWindow(Boolean duringShow)
at System.Windows.Window.CreateSourceWindowDuringShow()
at System.Windows.Window.SafeCreateWindowDuringShow()
at System.Windows.Window.ShowHelper(Object booleanBox)
at System.Windows.Window.Show()
at Dentist.MainWindow.<RibbonWindow_Loaded>b__0() in D:\development\Dental Soft\Lotus\AMS\Dentist\MainWindow.xaml.cs:line 210
at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean ignoreSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart()

TargetSite: {Void VerifyAccess()}

---

此外，我还提到了两件奇怪的事情：这段代码在Windows8中完美地工作，但在Windows7和WindowsXP中不工作，而且当我从视图中删除时，这段代码工作正常。如果我只使用控件而不使用任何绑定，也会出现相同的异常

您不需要另一个线程来并行运行另一个窗口。只在后台线程上执行与数据相关的操作，不要在那里创建GUI元素。

可能与我编辑过的标题重复。请看，如果一致意见是否定的，他们就不应该这样做。您是从一个底层线程在通知视图中创建WPF对象吗？这不应该工作，是吗？我已经做了线程前景，但仍然是相同的问题。你是否在搜索框中粘贴了异常？这个问题已经被回答了大约一千次。。。可能一天几次。微软可能应该将答案直接构建到VisualStudio中，让每个人在第一次实例化代码中的线程时都阅读它。。。

<Border BorderThickness="1" Background="Beige" BorderBrush="DarkKhaki" CornerRadius="5">
    <StackPanel Margin="5">
        <TextBlock Text="{Binding ReminderModel.Message}" TextWrapping="NoWrap" Margin="5" FontWeight="Bold"></TextBlock>
        <TextBlock Text="{Binding ReminderModel.DateFormatted}" TextWrapping="NoWrap" Margin="5"></TextBlock>
        <TextBlock Text="{Binding ReminderModel.Patient}" TextWrapping="NoWrap" Margin="5"></TextBlock>
        <TextBlock Text="{Binding ReminderModel.PatientPhoneNumbers}" TextWrapping="Wrap" Margin="5"></TextBlock>
        <TextBlock Text="{Binding ReminderModel.Doctor}" TextWrapping="NoWrap" Margin="5"></TextBlock>
        <CheckBox IsChecked="{Binding ReminderModel.IsCompleted}" Margin="5" />
    </StackPanel>
</Border>
</Border>

notificationsView.Show();

at System.Windows.Threading.Dispatcher.VerifyAccess()
at System.Windows.DependencyObject.GetValue(DependencyProperty dp)
at System.Windows.Media.SolidColorBrush.get_Color()
at System.Windows.Controls.Border.ArrangeOverride(Size finalSize)
at System.Windows.FrameworkElement.ArrangeCore(Rect finalRect)
at System.Windows.UIElement.Arrange(Rect finalRect)
at System.Windows.Controls.Primitives.BulletDecorator.ArrangeOverride(Size arrangeSize)
at System.Windows.FrameworkElement.ArrangeCore(Rect finalRect)
at System.Windows.UIElement.Arrange(Rect finalRect)
at System.Windows.Controls.Control.ArrangeOverride(Size arrangeBounds)
at System.Windows.FrameworkElement.ArrangeCore(Rect finalRect)
at System.Windows.UIElement.Arrange(Rect finalRect)
at System.Windows.Controls.StackPanel.ArrangeOverride(Size arrangeSize)
at System.Windows.FrameworkElement.ArrangeCore(Rect finalRect)
at System.Windows.UIElement.Arrange(Rect finalRect)
at System.Windows.Controls.Border.ArrangeOverride(Size finalSize)
at System.Windows.FrameworkElement.ArrangeCore(Rect finalRect)
at System.Windows.UIElement.Arrange(Rect finalRect)
at System.Windows.Controls.Grid.ArrangeOverride(Size arrangeSize)
at System.Windows.FrameworkElement.ArrangeCore(Rect finalRect)
at System.Windows.UIElement.Arrange(Rect finalRect)
at MS.Internal.Helper.ArrangeElementWithSingleChild(UIElement element, Size arrangeSize)
at System.Windows.Controls.ContentPresenter.ArrangeOverride(Size arrangeSize)
at System.Windows.FrameworkElement.ArrangeCore(Rect finalRect)
at System.Windows.UIElement.Arrange(Rect finalRect)
at System.Windows.Documents.AdornerDecorator.ArrangeOverride(Size finalSize)
at System.Windows.FrameworkElement.ArrangeCore(Rect finalRect)
at System.Windows.UIElement.Arrange(Rect finalRect)
at System.Windows.Controls.Border.ArrangeOverride(Size finalSize)
at System.Windows.FrameworkElement.ArrangeCore(Rect finalRect)
at System.Windows.UIElement.Arrange(Rect finalRect)
at System.Windows.Window.ArrangeOverride(Size arrangeBounds)
at System.Windows.FrameworkElement.ArrangeCore(Rect finalRect)
at System.Windows.UIElement.Arrange(Rect finalRect)
at System.Windows.Interop.HwndSource.SetLayoutSize()
at System.Windows.Interop.HwndSource.set_RootVisualInternal(Visual value)
at System.Windows.Interop.HwndSource.set_RootVisual(Visual value)
at System.Windows.Window.SetRootVisual()
at System.Windows.Window.SetRootVisualAndUpdateSTC()
at System.Windows.Window.SetupInitialState(Double requestedTop, Double requestedLeft, Double requestedWidth, Double requestedHeight)
at System.Windows.Window.CreateSourceWindow(Boolean duringShow)
at System.Windows.Window.CreateSourceWindowDuringShow()
at System.Windows.Window.SafeCreateWindowDuringShow()
at System.Windows.Window.ShowHelper(Object booleanBox)
at System.Windows.Window.Show()
at Dentist.MainWindow.<RibbonWindow_Loaded>b__0() in D:\development\Dental Soft\Lotus\AMS\Dentist\MainWindow.xaml.cs:line 210
at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean ignoreSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart()

TargetSite: {Void VerifyAccess()}