UWP - .exe文件已附加调试器但未配置

Question

我正在开发Windows Store App (UWP)应用程序并且遇到了本地代码的问题 - 出现了以下错误信息。

在第二次或第三次执行这段代码后，就会抛出此异常。

if(ProjectionManager.ProjectionDisplayAvailable)
{
    if(init != null)
    {
        init.ProjectionViewPageControl.StartViewInUse();
        await ProjectionManager.StopProjectingAsync(MainPage.SecondaryViewId, thisViewId);
        init.ProjectionViewPageControl.StopViewInUse();
        rootPage.ProjectionViewPageControl = null;
    }

    if(rootPage.ProjectionViewPageControl == null)
    {
        //First, create a new, blank view
        var thisDispatcher = Window.Current.Dispatcher;
        await CoreApplication.CreateNewView().Dispatcher.RunAsync(CoreDispatcherPriority.Normal, () =>
        {
            rootPage.ProjectionViewPageControl = ViewLifetimeControl.CreateForCurrentView();                //ViewLifetimeControl is a wrapper to make sure the view is closed only when the app is done with it

            //Assemble some data necessary for the new page
            init = new ProjectionViewPageInitializationData();
            init.MainDispatcher = thisDispatcher;
            init.ProjectionViewPageControl = rootPage.ProjectionViewPageControl;
            init.MainViewId = thisViewId;
                                            //Note that the view will not become visible until "StartProjectingAsync" is called
            var rootFrame = new Frame();
            rootFrame.Navigate(typeof(ProjectionViewPage), init);
            Window.Current.Content = rootFrame;
            Window.Current.Activate();
        });
    }

    try
    {
        rootPage.ProjectionViewPageControl.StartViewInUse();    // Start/StopViewInUse are used to signal that the app is interacting with the view, so it shouldn't be closed yet, even if the user loses access to it
        await ProjectionManager.StartProjectingAsync(rootPage.ProjectionViewPageControl.Id, thisViewId);    // Show the view on a second display (if available) or on the primary display
        rootPage.ProjectionViewPageControl.StopViewInUse();
    }
    catch { }
}

ProjectionViewPage打开时，一切正常。但我不知道哪里出了问题。这个异常在不同的时间抛出，在页面打开和关闭的不同时间之后。我不知道哪里出了问题。

更新： 当ProjectionViewPage具有MediaElement控件时，会出现问题。

- Vlad

Answer 1

你需要将调试器类型从“仅托管”（默认）更改为“混合”类型。这不会解决你的异常问题，但至少现在你可以通过调试器追踪它 :)

- RoboLam