Windows 商店应用程序中是否有全局异常处理程序? [英] Is there a global exception handler in Windows store apps?

问题描述

对于未处理的异常，至少，我希望能够捕获详细信息并将它们写到文件中，以供可能的后续调试取证".Windows 商店应用程序中没有OnTerminating"事件；有没有合适的地方/方式来完成这个?

For unhandled exceptions, at least, I'd like to be able to catch the details and write them out to a file for potential subsequent "debugging forensics." There is no "OnTerminating" event in Windows store apps; is there a suitable place/way to accomplish such?

请参阅下面的评论.这是一个不适合下面的补充:

See my comment below. Here is an addition that won't fit below:

即使在删除 xaml 片段时，我仍然会收到错误消息，即使在清理和重建之后......?2-clicking err msg 将我带到 App.xaml 的顶部，现在的全部内容是:

Even when removing the xaml snippet, I still get that err msg, and even after Cleaning and Rebuilding...??? 2-clicking the err msg just takes me to the top of App.xaml, the entirety of which is now:

<Application
    x:Class="SpaceOverlays.App"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:local="using:SpaceOverlays">

    <Application.Resources>
        <ResourceDictionary>
            <ResourceDictionary.MergedDictionaries>

                <!-- 
                    Styles that define common aspects of the platform look and feel
                    Required by Visual Studio project and item templates
                 -->
                <ResourceDictionary Source="Common/StandardStyles.xaml"/>
            </ResourceDictionary.MergedDictionaries>

        </ResourceDictionary>
    </Application.Resources>

更新 2

关闭 App.xaml 并重建后，一切都很好......???哦，好吧——我想一切都很好，结局很好.

UPDATE 2

After closing App.xaml and rebuilding, all is well...??? Oh, well - all's well that ends well, I guess.

有趣的是，Windows Phone 应用 App.xaml.cs 默认有这个处理程序:

It's interesting that Windows Phone apps App.xaml.cs have this handler by default:

    // Global handler for uncaught exceptions.
    UnhandledException += Application_UnhandledException;

private void Application_UnhandledException(object sender, ApplicationUnhandledExceptionEventArgs e)
{
    if (Debugger.IsAttached)
    {
        // An unhandled exception has occurred; break into the debugger
        Debugger.Break();
    }
}

推荐答案

对于 HTML5/JavaScript 应用程序，您有 onerror 事件是您获取信息的最后机会.

For HTML5/JavaScript apps you have the onerror event as your last chance to capture info.

对于基于 XAML 的应用，您可以使用 UnhandledException;但是，这仅捕获通过 XAML (UI) 框架出现的异常，即使在 InnerException 中，您也不总是能获得很多关于根本原因的信息.

For XAML-based apps, you can use UnhandledException; however, that only captures exceptions that come up through the XAML (UI) framework and you don't always get a lot of information about what the root cause is, even in InnerException.

Windows 8.1 更新: UnhandledException 还将捕获由 async void 方法创建的异常.在 Windows 8 中，此类异常只会使应用程序崩溃.LunarFrog 在他们的网站上有一个很好的讨论.

Update for Windows 8.1: UnhandledException also will capture exceptions that are created by an async void method. In Windows 8, such exceptions would just crash the app. LunarFrog has a good discussion of this on their website.

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