C# 更新ViewModel中的属性后未实现异常0x80004001

上下文是用于Windows Phone 7的Silverlight应用程序。我正在用模拟器调试

我有一个

MainPage.xaml

，在其数据上下文中附加了一个ViewModel。
当页面导航到时，将在ViewModel中调用一个方法来调用API并显示信息

我有一个方法，可以创建一个

字典

，用数据填充它，并在实现

PropertyChanged

事件的属性中设置它

调用此方法后，调试器会在App.Application\u UnhandledException中使用NotImplementedException中断

如果使用调试器跳过对此方法的调用，则不会引发异常

奇怪的是，异常是在调用方法后引发的，而不是在内部！该异常不包含InnerException。HResult为-2147467263，消息中包含“0x80004001”。以下是StackTrace：

at MS.Internal.XcpImports.CheckHResult(UInt32 hr)
at MS.Internal.XcpImports.FrameworkElement_MeasureOverride(FrameworkElement element, Size availableSize)
at System.Windows.FrameworkElement.MeasureOverride(Size availableSize)
at System.Windows.FrameworkElement.MeasureOverride(IntPtr nativeTarget, Single inWidth, Single inHeight, Single& outWidth, Single& outHeight)
at MS.Internal.XcpImports.MeasureNative(IntPtr element, Single inWidth, Single inHeight)
at MS.Internal.XcpImports.UIElement_Measure(UIElement element, Size availableSize)
at System.Windows.UIElement.Measure(Size availableSize)
at Microsoft.Phone.Controls.Primitives.PanoramaPanel.MeasureOverride(Size availableSize)
at System.Windows.FrameworkElement.MeasureOverride(IntPtr nativeTarget, Single inWidth, Single inHeight, Single& outWidth, Single& outHeight)
at MS.Internal.XcpImports.MeasureOverrideNative(IntPtr element, Single inWidth, Single inHeight, Single& outWidth, Single& outHeight)
at MS.Internal.XcpImports.FrameworkElement_MeasureOverride(FrameworkElement element, Size availableSize)
at System.Windows.FrameworkElement.MeasureOverride(Size availableSize)
at System.Windows.FrameworkElement.MeasureOverride(IntPtr nativeTarget, Single inWidth, Single inHeight, Single& outWidth, Single& outHeight)
at MS.Internal.XcpImports.MeasureOverrideNative(IntPtr element, Single inWidth, Single inHeight, Single& outWidth, Single& outHeight)
at MS.Internal.XcpImports.FrameworkElement_MeasureOverride(FrameworkElement element, Size availableSize)
at System.Windows.FrameworkElement.MeasureOverride(Size availableSize)
at Microsoft.Phone.Controls.Panorama.MeasureOverride(Size availableSize)
at System.Windows.FrameworkElement.MeasureOverride(IntPtr nativeTarget, Single inWidth, Single inHeight, Single& outWidth, Single& outHeight)
at MS.Internal.XcpImports.MeasureOverrideNative(IntPtr element, Single inWidth, Single inHeight, Single& outWidth, Single& outHeight)
at MS.Internal.XcpImports.FrameworkElement_MeasureOverride(FrameworkElement element, Size availableSize)
at System.Windows.FrameworkElement.MeasureOverride(Size availableSize)
at System.Windows.FrameworkElement.MeasureOverride(IntPtr nativeTarget, Single inWidth, Single inHeight, Single& outWidth, Single& outHeight)
at MS.Internal.XcpImports.MeasureOverrideNative(IntPtr element, Single inWidth, Single inHeight, Single& outWidth, Single& outHeight)
at MS.Internal.XcpImports.FrameworkElement_MeasureOverride(FrameworkElement element, Size availableSize)
at System.Windows.FrameworkElement.MeasureOverride(Size availableSize)
at Microsoft.Phone.Controls.PhoneApplicationFrame.MeasureOverride(Size availableSize)
at System.Windows.FrameworkElement.MeasureOverride(IntPtr nativeTarget, Single inWidth, Single inHeight, Single& outWidth, Single& outHeight)

调试输出包含：

A first chance exception of type 'System.ArgumentNullException' occurred in mscorlib.dll (x10)
A first chance exception of type 'System.NotImplementedException' occurred in System.Windows.dll (x6)

---

哦。我通过检查XAML端的数据绑定发现了一个用户错误。这是我的XAML：

<TextBlock Grid.Column="0" Text="{Binding Value}"
           Style="PhoneTextLargeStyle" />
<TextBlock Grid.Column="1" Text="{Binding Key}"
           Style="PhoneTextLargeStyle" />

我忘了写它是一个静态资源：

<TextBlock Grid.Column="0" Text="{Binding Value}"
           Style="{StaticResource PhoneTextLargeStyle}" />
<TextBlock Grid.Column="1" Text="{Binding Key}"
           Style="{StaticResource PhoneTextLargeStyle}" />

让我们希望这个愚蠢的问题/自动回答能帮助某人：）