Question

当我尝试加载应用程序时，我收到XamlParserException。这个例外不一致。

请帮助我。

这是异常的堆栈跟踪。

System.Windows.Markup.XamlParseException: 'System.Windows.Baml2006.TypeConverterMarkupExtension' の値の指定時に例外がスローされました。 ---> System.ArgumentOutOfRangeException: インデックスが範囲を超えています。負でない値で、コレクションのサイズよりも小さくなければなりません。
パラメーター名: index
   at System.ThrowHelper.ThrowArgumentOutOfRangeException()
   at System.Collections.Generic.List`1.get_Item(Int32 index)
   at System.Windows.Media.Imaging.BitmapDecoder.SetupFrames(BitmapDecoder decoder, ReadOnlyCollection`1 frames)
   at System.Windows.Media.Imaging.BitmapDecoder.Initialize(BitmapDecoder decoder)
   at System.Windows.Media.Imaging.BitmapDecoder..ctor(SafeMILHandle decoderHandle, BitmapDecoder decoder, Uri baseUri, Uri uri, Stream stream, BitmapCreateOptions createOptions, BitmapCacheOption cacheOption, Boolean insertInDecoderCache, Boolean isOriginalWritable, Stream uriStream, UnmanagedMemoryStream unmanagedMemoryStream, SafeFileHandle safeFilehandle)
   at System.Windows.Media.Imaging.PngBitmapDecoder..ctor(SafeMILHandle decoderHandle, BitmapDecoder decoder, Uri baseUri, Uri uri, Stream stream, BitmapCreateOptions createOptions, BitmapCacheOption cacheOption, Boolean insertInDecoderCache, Boolean originalWritable, Stream uriStream, UnmanagedMemoryStream unmanagedMemoryStream, SafeFileHandle safeFilehandle)
   at System.Windows.Media.Imaging.BitmapDecoder.CreateFromUriOrStream(Uri baseUri, Uri uri, Stream stream, BitmapCreateOptions createOptions, BitmapCacheOption cacheOption, RequestCachePolicy uriCachePolicy, Boolean insertInDecoderCache)
   at System.Windows.Media.Imaging.BitmapFrame.CreateFromUriOrStream(Uri baseUri, Uri uri, Stream stream, BitmapCreateOptions createOptions, BitmapCacheOption cacheOption, RequestCachePolicy uriCachePolicy)
   at System.Windows.Media.ImageSourceConverter.ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, Object value)
   at System.Windows.Baml2006.TypeConverterMarkupExtension.ProvideValue(IServiceProvider serviceProvider)
   at MS.Internal.Xaml.Runtime.ClrObjectRuntime.CallProvideValue(MarkupExtension me, IServiceProvider serviceProvider)
   --- 内部例外スタック トレースの終わり ---
   at System.Windows.Markup.WpfXamlLoader.Load(XamlReader xamlReader, IXamlObjectWriterFactory writerFactory, Boolean skipJournaledProperties, Object rootObject, XamlObjectWriterSettings settings, Uri baseUri)
   at System.Windows.Markup.WpfXamlLoader.LoadBaml(XamlReader xamlReader, Boolean skipJournaledProperties, Object rootObject, XamlAccessLevel accessLevel, Uri baseUri)
   at System.Windows.Markup.XamlReader.LoadBaml(Stream stream, ParserContext parserContext, Object parent, Boolean closeStream)
   at System.Windows.Application.LoadComponent(Object component, Uri resourceLocator)
   at PenSoft.PrintSubmenuControl.InitializeComponent()
   at PenSoft.PrintSubmenuControl..ctor(MainWindow parent)
   at PenSoft.PrintSubmenuControl..ctor(PrintEventArgs args, MainWindow parent)
   at PenSoft.MainWindow.CreatePrintControl(Int32 id)
   at PenSoft.MainWindow.CreateSubmenuControl(Squaremenu squareMenu, SubSquareMenu submenuType)
   at PenSoft.ClassicMenuControl.InitLargeClassicMenu()
   at PenSoft.MainWindow.Window_Loaded(Object sender, RoutedEventArgs e)
   at System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)
   at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
   at System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)
   at System.Windows.UIElement.RaiseEvent(RoutedEventArgs e)
   at System.Windows.BroadcastEventHelper.BroadcastEvent(DependencyObject root, RoutedEvent routedEvent)
   at System.Windows.BroadcastEventHelper.BroadcastLoadedEvent(Object root)
   at MS.Internal.LoadedOrUnloadedOperation.DoWork()
   at System.Windows.Media.MediaContext.FireLoadedPendingCallbacks()
   at System.Windows.Media.MediaContext.FireInvokeOnRenderCallbacks()
   at System.Windows.Media.MediaContext.RenderMessageHandlerCore(Object resizedCompositionTarget)
   at System.Windows.Media.MediaContext.RenderMessageHandler(Object resizedCompositionTarget)
   at System.Windows.Media.MediaContext.Resize(ICompositionTarget resizedCompositionTarget)
   at System.Windows.Interop.HwndTarget.OnResize()
   at System.Windows.Interop.HwndTarget.HandleMessage(WindowMessage msg, IntPtr wparam, IntPtr lparam)
   at System.Windows.Interop.HwndSource.HwndTargetFilterMessage(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
   at MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
   at MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o)
   at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
   at MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object source, Delegate method, Object args, Int32 numArgs, Delegate catchHandler)

任何答案都将不胜感激。

谢谢，哈里什。

Answer 1

XamlParseException经常包含另一个异常，这是由XAML中的非法操作引起的。在这种情况下，它是ArgumentOutOfRangeException。它的消息转换为“索引超出范围。非负值，必须小于集合的大小”。

堆栈跟踪指向System.Collections.Generic.List1.get_Item(Int32 index)。因此，在XAML中的某个位置，您引用了一个带有非法索引的List。

Answer 2

查看异常类型：TypeConverterMarkupExtension，您在xaml中传递了无效值。没有查看代码就无法分辨，如果你可以分享你的xaml（你认为这导致了这个异常，那么会有所帮助。

但是，要提出想法，这会引发类似的例外：

...resource
<Color x:Key="ColorResource">Red</Color>
...
<Button Background="{StaticResource ColorResource}" />
//Would throw run-time exception because background expects Brush (and resource is color here)

我如何解决WPF中的XamlParseException

2 个答案: