WPF 在另一个线程中清除 ObservableCollection

WPF clear ObservableCollection in another thread

我在 WPF 中有应用程序,我想在从另一个线程设置 setter 时清除 ObservableCollection。

这是setter:

public List<Model.MasterReview> SelectedMasterReviews
        {
            get { return selectedMasterReviews; }
            set
            {
                selectedChildReview = null;
                selectedMasterReviews = value;

                Application.Current.Dispatcher.Invoke((Action)delegate
                {
                    GetChildReviews();
                });
            }
        }


private void GetChildReviews()
        {
            Application.Current.Dispatcher.Invoke((Action)delegate
            {
                ChildReviews.Clear();
            });
}

然后出现错误:

    This type of CollectionView does not support changes to its SourceCollection from a thread
 different from the Dispatcher thread

这段代码给我同样的错误:

var uiContext = SynchronizationContext.Current;
uiContext.Send(x => ChildReviews.Clear(), null);

我已经解决了这个问题。 第一次在另一个线程中清除 ChildReviews:

   Task.Run(() => Application.Current.Dispatcher.Invoke((Action)delegate
                {
                    GetChildReviews();
                }); )

然后在另一个分发器中:

Application.Current.Dispatcher.Invoke((Action)delegate
{
    GetChildReviews();
});

我不得不删除 Task.Run(),现在可以使用了