at Microsoft.Expression.Markup.DocumentModel.DocumentPrimitiveNode..ctor(IDocumentContext context, ITypeId typeId, IDocumentNodeValue value) at Microsoft.Expression.Markup.DocumentModel.DocumentPrimitiveNode.DocumentPrimitiveNodeDeserializer.Deserialize(IStateDeserializationContext
context) at Microsoft.Expression.DesignSurface.Documents.StreamDocumentStateDeserializationContext.Read(IStateDeserializer deserializer) at Microsoft.Expression.DesignSurface.Documents.StreamDocumentStateDeserializationContext.ReadTypeAndState()
at Microsoft.Expression.DesignSurface.Documents.SceneMarkupDocument.PropertyDictionaryChangeUndoUnit.PropertyDictionaryChangeUndoUnitDeserializer.Deserialize(IStateDeserializationContext context) at Microsoft.Expression.DesignSurface.Documents.StreamDocumentStateDeserializationContext.Read(IStateDeserializer
deserializer) at Microsoft.Expression.DesignSurface.Documents.StreamDocumentStateDeserializationContext.ReadTypeAndState() at Microsoft.Expression.DesignSurface.DesignerUndoService.ReadUndo(IStateDeserializationContext context, UndoTarget
target) at Microsoft.Expression.DesignSurface.Documents.SceneMarkupDocument.RestoreAdditionalDocumentNodes(IStateDeserializationContext context) at Microsoft.Expression.DesignSurface.ViewModel.SceneViewModel.ReadState(Stream input)
at Microsoft.Expression.DesignSurface.ViewModel.SceneViewModel.ReadContext() at Microsoft.Expression.DesignSurface.ViewModel.SceneViewModel.LoadContext() at Microsoft.Expression.DesignSurface.View.XamlSceneView.<.ctor>b__0()
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)
at System.Windows.Threading.DispatcherOperation.InvokeImpl() at System.Windows.Threading.DispatcherOperation.InvokeInSecurityContext(Object state) at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback
callback, Object state, Boolean preserveSyncCtx) at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx) at System.Threading.ExecutionContext.Run(ExecutionContext
executionContext, ContextCallback callback, Object state) at System.Windows.Threading.DispatcherOperation.Invoke() at System.Windows.Threading.Dispatcher.ProcessQueue() at System.Windows.Threading.Dispatcher.WndProcHook(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) at System.Windows.Threading.Dispatcher.LegacyInvokeImpl(DispatcherPriority priority, TimeSpan timeout, Delegate method, Object args, Int32 numArgs) at MS.Win32.HwndSubclass.SubclassWndProc(IntPtr hwnd, Int32 msg,
IntPtr wParam, IntPtr lParam) at MS.Win32.UnsafeNativeMethods.DispatchMessage(MSG& msg) at System.Windows.Threading.Dispatcher.PushFrameImpl(DispatcherFrame frame) at System.Windows.Threading.Dispatcher.PushFrame(DispatcherFrame
frame) at System.Windows.Threading.Dispatcher.Run() at System.Windows.Application.RunDispatcher(Object ignore) at System.Windows.Application.RunInternal(Window window) at System.Windows.Application.Run(Window
window) at System.Windows.Application.Run() at Microsoft.Expression.DesignHost.Isolation.IsolationProcess.RunApplication() at Microsoft.Expression.DesignHost.Isolation.IsolationProcess.DesignProcessViewProvider.<>c__DisplayClass7.<applicationView_Activated>b__6()
at System.Threading.ThreadHelper.ThreadStart_Context(Object state) at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx) at System.Threading.ExecutionContext.Run(ExecutionContext
executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx) at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state) at System.Threading.ThreadHelper.ThreadStart()
The XAML is:
<common:LayoutAwarePage
x:Name="pageRoot"
x:Class="metro.TreePage"
DataContext="{Binding DefaultViewModel, RelativeSource={RelativeSource Self}}"
IsTabStop="false"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="using:metro"
xmlns:common="using:metro.Common"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
mc:Ignorable="d">
<Page.Resources>
<!-- TODO: Delete this line if the key AppName is declared in App.xaml -->
<x:String x:Key="AppName">My Application</x:String>
</Page.Resources>
<!--
This grid acts as a root panel for the page that defines two rows:
* Row 0 contains the back button and page title
* Row 1 contains the rest of the page layout
-->
<Grid Style="{StaticResource LayoutRootStyle}">
<Grid.RowDefinitions>
<RowDefinition Height="340"/>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<!-- Back button and page title -->
<Grid Style="{StaticResource LayoutRootStyle}">
<Grid.RowDefinitions>
<RowDefinition Height="*"></RowDefinition>
<RowDefinition Height="*"></RowDefinition>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<Button x:Name="backButton" Click="GoBack" IsEnabled="{Binding Frame.CanGoBack, ElementName=pageRoot}" Style="{StaticResource BackButtonStyle}"/>
<TextBlock x:Name="pageTitle" Grid.Column="1" Text="{StaticResource AppName}" Style="{StaticResource PageHeaderTextStyle}"/>
<!--<Button Content="Button" Grid.Row="1"> </Button>-->
<!--<ListView x:Name="zzx" Grid.Row="1" Grid.Column="1" >
<x:String>Hello</x:String>
<x:String>World</x:String>
</ListView>-->
<SemanticZoom IsZoomedInViewActive="False" Grid.Row="1" Grid.Column="1" >
<SemanticZoom.ZoomedOutView>
<ListView x:Name="ZoomOutList">
<x:String>Chuid</x:String>
<ListView >
<Button Content="World"> </Button>
<Button Content="Africa"></Button>
<Button Content="Asia"></Button>
</ListView>
</ListView>
</SemanticZoom.ZoomedOutView>
<SemanticZoom.ZoomedInView>
<GridView x:Name="ZoomInList">
<x:String>Hello</x:String>
<x:String>World</x:String>
</GridView>
</SemanticZoom.ZoomedInView>
</SemanticZoom>
</Grid>
<VisualStateManager.VisualStateGroups>
<!-- Visual states reflect the application's view state -->
<VisualStateGroup x:Name="ApplicationViewStates">
<VisualState x:Name="FullScreenLandscape"/>
<VisualState x:Name="Filled"/>
<!-- The entire page respects the narrower 100-pixel margin convention for portrait -->
<VisualState x:Name="FullScreenPortrait">
<Storyboard>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="backButton" Storyboard.TargetProperty="Style">
<DiscreteObjectKeyFrame KeyTime="0" Value="{StaticResource PortraitBackButtonStyle}"/>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
<!-- The back button and title have different styles when snapped -->
<VisualState x:Name="Snapped">
<Storyboard>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="backButton" Storyboard.TargetProperty="Style">
<DiscreteObjectKeyFrame KeyTime="0" Value="{StaticResource SnappedBackButtonStyle}"/>
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="pageTitle" Storyboard.TargetProperty="Style">
<DiscreteObjectKeyFrame KeyTime="0" Value="{StaticResource SnappedPageHeaderTextStyle}"/>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
</Grid>
</common:LayoutAwarePage>
The program will run correctly. And if I exit VS, and reload the project, then the designer does not get the exception. However, clicking on "reload the designer" still produces the same error. I figured that if I report it, perhaps the next version
can recover more gracefully from the problem; perhaps reporting what "Value" is getting or has a null reference.
-- XAML designer in C++ VS Metro environment gives exception on previous contents of XAML file, not the contents visible to the user.
-- XAML designer not catching syntax errors in XAML cleanly- unhandled exception.
Unhandled Exception has occurred
By said Reload, I assume you mean close xaml file, then reopen it? or close solution and VS, re-launch VS, and open the project again? Or, kill xDesProc.exe, and then click "Click here to reload the designer".
