在“System.Windows.Markup.StaticResourceHolder”上提供值引发异常
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【中文标题】在“System.Windows.Markup.StaticResourceHolder”上提供值引发异常【英文标题】：Provide value on 'System.Windows.Markup.StaticResourceHolder' threw an exception 【发布时间】：2012-04-17 03:38:30 【问题描述】：我正在使用http://blogs.microsoft.co.il/blogs/justguy/archive/2009/01/19/wpf-combobox-with-checkboxes-as-items-it-will-even-update-on-the-fly.aspx?CommentPosted=true#commentmessage
在同一组合框中显示所选项目的示例，用逗号分隔。
但是当我尝试在 wpfform 中使用 Usercontrol 时，我得到了这个异常
System.Windows.Markup.XamlParseException was unhandled
Message=Provide value on 'System.Windows.Markup.StaticResourceHolder' threw an exception.
Source=PresentationFramework
LineNumber=0
LinePosition=0
StackTrace:
at System.Windows.Markup.XamlReader.RewrapException(Exception e, Uri baseUri)
at System.Windows.FrameworkTemplate.LoadTemplateXaml(XamlReader templateReader, XamlObjectWriter currentWriter)
at System.Windows.FrameworkTemplate.LoadTemplateXaml(XamlObjectWriter objectWriter)
at System.Windows.FrameworkTemplate.LoadOptimizedTemplateContent(DependencyObject container, IComponentConnector componentConnector, IStyleConnector styleConnector, List`1 affectedChildren, UncommonField`1 templatedNonFeChildrenField)
at System.Windows.FrameworkTemplate.LoadContent(DependencyObject container, List`1 affectedChildren)
at System.Windows.StyleHelper.ApplyTemplateContent(UncommonField`1 dataField, DependencyObject container, FrameworkElementFactory templateRoot, Int32 lastChildIndex, HybridDictionary childIndexFromChildID, FrameworkTemplate frameworkTemplate)
at System.Windows.FrameworkTemplate.ApplyTemplateContent(UncommonField`1 templateDataField, FrameworkElement container)
at System.Windows.FrameworkElement.ApplyTemplate()
at System.Windows.FrameworkElement.MeasureCore(Size availableSize)
at System.Windows.UIElement.Measure(Size availableSize)
at MS.Internal.Helper.MeasureElementWithSingleChild(UIElement element, Size constraint)
at System.Windows.Controls.ContentPresenter.MeasureOverride(Size constraint)
at System.Windows.FrameworkElement.MeasureCore(Size availableSize)
at System.Windows.UIElement.Measure(Size availableSize)
at System.Windows.Controls.Border.MeasureOverride(Size constraint)
at System.Windows.FrameworkElement.MeasureCore(Size availableSize)
at System.Windows.UIElement.Measure(Size availableSize)
at System.Windows.Controls.Control.MeasureOverride(Size constraint)
at System.Windows.FrameworkElement.MeasureCore(Size availableSize)
at System.Windows.UIElement.Measure(Size availableSize)
at MS.Internal.Helper.MeasureElementWithSingleChild(UIElement element, Size constraint)
at System.Windows.Controls.ContentPresenter.MeasureOverride(Size constraint)
at System.Windows.FrameworkElement.MeasureCore(Size availableSize)
at System.Windows.UIElement.Measure(Size availableSize)
at System.Windows.Documents.AdornerDecorator.MeasureOverride(Size constraint)
at System.Windows.FrameworkElement.MeasureCore(Size availableSize)
at System.Windows.UIElement.Measure(Size availableSize)
at System.Windows.Controls.Border.MeasureOverride(Size constraint)
at System.Windows.FrameworkElement.MeasureCore(Size availableSize)
at System.Windows.UIElement.Measure(Size availableSize)
at System.Windows.Window.MeasureOverrideHelper(Size constraint)
at System.Windows.Window.MeasureOverride(Size availableSize)
at System.Windows.FrameworkElement.MeasureCore(Size availableSize)
at System.Windows.UIElement.Measure(Size availableSize)
at System.Windows.Interop.HwndSource.SetLayoutSize()
at System.Windows.Interop.HwndSource.set_RootVisualInternal(Visual value)
at System.Windows.Interop.HwndSource.set_RootVisual(Visual value)
at System.Windows.Window.SetRootVisual()
at System.Windows.Window.SetRootVisualAndUpdateSTC()
at System.Windows.Window.SetupInitialState(Double requestedTop, Double requestedLeft, Double requestedWidth, Double requestedHeight)
at System.Windows.Window.CreateSourceWindow(Boolean duringShow)
at System.Windows.Window.CreateSourceWindowDuringShow()
at System.Windows.Window.SafeCreateWindowDuringShow()
at System.Windows.Window.ShowHelper(Object booleanBox)
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.runTryCode(Object userData)
at System.Runtime.CompilerServices.RuntimeHelpers.ExecuteCodeWithGuaranteedCleanup(TryCode code, CleanupCode backoutCode, Object userData)
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean ignoreSyncCtx)
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.InvokeImpl(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 CheckboxInComboboxWpf.App.Main() in C:\test\CheckboxInComboboxWpf\CheckboxInComboboxWpf\obj\x86\Debug\App.g.cs:line 0
at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)
at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean ignoreSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart()
InnerException:
Message=Cannot find resource named 'SolidBorderBrush'. Resource names are case sensitive.
Source=PresentationFramework
StackTrace:
at System.Windows.StaticResourceExtension.ProvideValueInternal(IServiceProvider serviceProvider, Boolean allowDeferredReference)
at System.Windows.StaticResourceExtension.ProvideValue(IServiceProvider serviceProvider)
at MS.Internal.Xaml.Runtime.ClrObjectRuntime.CallProvideValue(MarkupExtension me, IServiceProvider serviceProvider)
InnerException:
【问题讨论】：
【参考方案1】：问题是因为您的样式顺序不正确。我的意思是，如果我们在静态资源NormalBrush 上发布按钮样式，并在样式下声明，如下所示：
<Style TargetType="x:Type Button">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="x:Type Button">
<Border Background="StaticResource NormalBrush" >
<ContentPresenter Name="ButtonCont"></ContentPresenter>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<LinearGradientBrush x:Key="NormalBrush" StartPoint="0,0" EndPoint="0,1">
<GradientBrush.GradientStops>
<GradientStopCollection>
<GradientStop Color="#FFF" Offset="0.0"/>
<GradientStop Color="#CCC" Offset="1.0"/>
</GradientStopCollection>
</GradientBrush.GradientStops>
</LinearGradientBrush>
这段代码会给你这样的错误。但是如果你改变了，像这样
<LinearGradientBrush x:Key="NormalBrush" StartPoint="0,0" EndPoint="0,1">
<GradientBrush.GradientStops>
<GradientStopCollection>
<GradientStop Color="#FFF" Offset="0.0"/>
<GradientStop Color="#CCC" Offset="1.0"/>
</GradientStopCollection>
</GradientBrush.GradientStops>
</LinearGradientBrush>
<Style TargetType="x:Type Button">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="x:Type Button">
<Border Background="StaticResource ButtonBackground" >
<ContentPresenter Name="ButtonCont"></ContentPresenter>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
一切正常。如果您的资源存储在不同的 xaml 文件中并且您将它们附加到您的 ResourceDictionary 中，也会发生同样的情况。例如（考虑我们将NormalBrush 存储在Colors.xaml 和Button 中Button.xaml）。这给出了错误：
<ResourceDictionary Source="Resources\Button.xaml" />
<ResourceDictionary Source="Resources\Colors.xaml" />
这应该工作错误：
<ResourceDictionary Source="Resources\Colors.xaml" />
<ResourceDictionary Source="Resources\Button.xaml" />
【讨论】：
在我使用ResourceDictionary.MergedDictionaries时，订单是否也会导致这个问题？
@DROPtableusers 是的。我自己被高估了，但是是的。我想这是因为编译器逐行读取资源。因此，如果您的某些字典引用了向前的字典，它根本找不到它，因为它还没有编译。
很有趣，感谢您的回复。我遇到了类似的问题，但这是因为我试图加载一个不存在的资源（令人惊讶的是它不起作用......）【参考方案2】：
请检查您是否在不存在的 Xaml 中指定了转换器。
【讨论】：
尝试使用未声明的样式时出现同样的错误 在我的情况下，它是我的资源文件 App.xaml 中不存在的 StaticResource（一种颜色）【参考方案3】：我偶然发现了这个确切的问题。 XAML 文件有问题。
XAML 中缺少SolidBorderBrush。通过添加它，示例可以正常工作。
<SolidColorBrush x:Key="SolidBorderBrush" Color="#000" />
下面是 XAML 文件的完整内容。
<UserControl x:Class="Controls.ComboWithCheckboxes"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
Height="22" Width="120"
x:Name="UserControl"
>
<UserControl.Resources>
<LinearGradientBrush x:Key="NormalBrush" StartPoint="0,0" EndPoint="0,1">
<GradientBrush.GradientStops>
<GradientStopCollection>
<GradientStop Color="#FFF" Offset="0.0"/>
<GradientStop Color="#CCC" Offset="1.0"/>
</GradientStopCollection>
</GradientBrush.GradientStops>
</LinearGradientBrush>
<LinearGradientBrush x:Key="NormalBorderBrush" StartPoint="0,0" EndPoint="0,1">
<GradientBrush.GradientStops>
<GradientStopCollection>
<GradientStop Color="#CCC" Offset="0.0"/>
<GradientStop Color="#444" Offset="1.0"/>
</GradientStopCollection>
</GradientBrush.GradientStops>
</LinearGradientBrush>
<SolidColorBrush x:Key="GlyphBrush" Color="#444" />
<LinearGradientBrush x:Key="DarkBrush" StartPoint="0,0" EndPoint="0,1">
<GradientBrush.GradientStops>
<GradientStopCollection>
<GradientStop Color="#FFF" Offset="0.0"/>
<GradientStop Color="#AAA" Offset="1.0"/>
</GradientStopCollection>
</GradientBrush.GradientStops>
</LinearGradientBrush>
<LinearGradientBrush x:Key="PressedBrush" StartPoint="0,0" EndPoint="0,1">
<GradientBrush.GradientStops>
<GradientStopCollection>
<GradientStop Color="#BBB" Offset="0.0"/>
<GradientStop Color="#EEE" Offset="0.1"/>
<GradientStop Color="#EEE" Offset="0.9"/>
<GradientStop Color="#FFF" Offset="1.0"/>
</GradientStopCollection>
</GradientBrush.GradientStops>
</LinearGradientBrush>
<SolidColorBrush x:Key="SolidBorderBrush" Color="#000" />
<SolidColorBrush x:Key="DisabledForegroundBrush" Color="#888" />
<SolidColorBrush x:Key="DisabledBackgroundBrush" Color="#EEE" />
<SolidColorBrush x:Key="WindowBackgroundBrush" Color="#FFF" />
<SolidColorBrush x:Key="SelectedBackgroundBrush" Color="#DDD" />
<ControlTemplate x:Key="ComboBoxToggleButton" TargetType="ToggleButton">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition />
<ColumnDefinition Width="20" />
</Grid.ColumnDefinitions>
<Border
x:Name="Border"
Grid.ColumnSpan="2"
CornerRadius="2"
Background="StaticResource NormalBrush"
BorderBrush="StaticResource NormalBorderBrush"
BorderThickness="1" />
<Border
Grid.Column="0"
CornerRadius="2,0,0,2"
Margin="1"
Background="StaticResource WindowBackgroundBrush"
BorderBrush="StaticResource NormalBorderBrush"
BorderThickness="0,0,1,0" />
<Path
x:Name="Arrow"
Grid.Column="1"
Fill="StaticResource GlyphBrush"
HorizontalAlignment="Center"
VerticalAlignment="Center"
Data="M 0 0 L 4 4 L 8 0 Z"/>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="ToggleButton.IsMouseOver" Value="true">
<Setter TargetName="Border" Property="Background" Value="StaticResource DarkBrush" />
</Trigger>
<Trigger Property="ToggleButton.IsChecked" Value="true">
<Setter TargetName="Border" Property="Background" Value="StaticResource PressedBrush" />
</Trigger>
<Trigger Property="IsEnabled" Value="False">
<Setter TargetName="Border" Property="Background" Value="StaticResource DisabledBackgroundBrush" />
<Setter TargetName="Border" Property="BorderBrush" Value="StaticResource DisabledBorderBrush" />
<Setter Property="Foreground" Value="StaticResource DisabledForegroundBrush"/>
<Setter TargetName="Arrow" Property="Fill" Value="StaticResource DisabledForegroundBrush" />
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
<ControlTemplate x:Key="ComboBoxTextBox" TargetType="TextBox">
<Border x:Name="PART_ContentHost" Focusable="False" Background="TemplateBinding Background" />
</ControlTemplate>
<Style x:Key="x:Type ComboBoxItem" TargetType="ComboBoxItem">
<Setter Property="SnapsToDevicePixels" Value="true"/>
<Setter Property="OverridesDefaultStyle" Value="true"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="ComboBoxItem">
<Border
Name="Border"
Padding="2"
SnapsToDevicePixels="true">
<ContentPresenter />
</Border>
<ControlTemplate.Triggers>
<Trigger Property="IsHighlighted" Value="true">
<Setter TargetName="Border" Property="Background" Value="StaticResource SelectedBackgroundBrush"/>
</Trigger>
<Trigger Property="IsEnabled" Value="false">
<Setter Property="Foreground" Value="StaticResource DisabledForegroundBrush"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</UserControl.Resources>
<ComboBox
x:Name="CheckableCombo"
SnapsToDevicePixels="True"
OverridesDefaultStyle="True"
ScrollViewer.HorizontalScrollBarVisibility="Auto"
ScrollViewer.VerticalScrollBarVisibility="Auto"
ScrollViewer.CanContentScroll="True"
IsSynchronizedWithCurrentItem="True"
MinWidth="120"
MinHeight="20"
ItemsSource="Binding ElementName=UserControl, Path=ItemsSource"
DataContext="Binding ElementName=UserControl, Path=DataContext"
>
<ComboBox.ItemTemplate>
<HierarchicalDataTemplate>
<CheckBox Content="Binding Title"
IsChecked="Binding Path=IsSelected, Mode=TwoWay"
Tag="RelativeSource FindAncestor, AncestorType=x:Type ComboBox"
Click="CheckBox_Click"
/>
</HierarchicalDataTemplate>
</ComboBox.ItemTemplate>
<ComboBox.Template>
<ControlTemplate TargetType="ComboBox">
<Grid>
<ToggleButton
Name="ToggleButton"
Template="StaticResource ComboBoxToggleButton"
Grid.Column="2"
Focusable="false"
IsChecked="Binding Path=IsDropDownOpen,Mode=TwoWay,RelativeSource=RelativeSource TemplatedParent"
ClickMode="Press">
</ToggleButton>
<ContentPresenter
x:Name="Presenter"
IsHitTestVisible="False"
Margin="3,3,23,3"
VerticalAlignment="Center"
HorizontalAlignment="Left">
<ContentPresenter.Content>
<TextBlock TextTrimming="CharacterEllipsis"
Text="Binding Path=Text,Mode=TwoWay,RelativeSource=RelativeSource Mode=FindAncestor, AncestorType=UserControl" />
</ContentPresenter.Content>
</ContentPresenter>
<TextBox x:Name="EditableTextBox"
Style="x:Null"
Template="StaticResource ComboBoxTextBox"
HorizontalAlignment="Left"
VerticalAlignment="Center"
Margin="3,3,23,3"
Focusable="True"
Background="Transparent"
Visibility="Hidden"
IsReadOnly="TemplateBinding IsReadOnly"/>
<Popup
Name="Popup"
Placement="Bottom"
IsOpen="TemplateBinding IsDropDownOpen"
AllowsTransparency="True"
Focusable="False"
PopupAnimation="Slide">
<Grid
Name="DropDown"
SnapsToDevicePixels="True"
MinWidth="TemplateBinding ActualWidth"
MaxHeight="TemplateBinding MaxDropDownHeight">
<Border
x:Name="DropDownBorder"
Background="StaticResource WindowBackgroundBrush"
BorderThickness="1"
BorderBrush="StaticResource SolidBorderBrush"/>
<ScrollViewer Margin="4,6,4,6" SnapsToDevicePixels="True" DataContext="Binding">
<StackPanel IsItemsHost="True" KeyboardNavigation.DirectionalNavigation="Contained" />
</ScrollViewer>
</Grid>
</Popup>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="HasItems" Value="false">
<Setter TargetName="DropDownBorder" Property="MinHeight" Value="95"/>
</Trigger>
<Trigger Property="IsEnabled" Value="false">
<Setter Property="Foreground" Value="StaticResource DisabledForegroundBrush"/>
</Trigger>
<Trigger Property="IsGrouping" Value="true">
<Setter Property="ScrollViewer.CanContentScroll" Value="false"/>
</Trigger>
<Trigger SourceName="Popup" Property="Popup.AllowsTransparency" Value="true">
<Setter TargetName="DropDownBorder" Property="CornerRadius" Value="4"/>
<Setter TargetName="DropDownBorder" Property="Margin" Value="0,2,0,0"/>
</Trigger>
<Trigger Property="IsEditable"
Value="true">
<Setter Property="IsTabStop" Value="false"/>
<Setter TargetName="EditableTextBox" Property="Visibility" Value="Visible"/>
<Setter TargetName="Presenter" Property="Visibility" Value="Hidden"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</ComboBox.Template>
</ComboBox>
【讨论】：
【参考方案4】：通过使用DynamicResource而不是StaticResource，它将在运行时找到资源，因此您不必担心 XAML 中声明的顺序。
这可能有缺点（？），但在特别棘手的情况下，这是我祈祷的答案。
【讨论】：
【参考方案5】：检查您的 resource.resx 文件的权限。在您的文件顶部，您会发现称为访问修饰符的下拉列表：将其类型更改为“公共”
【讨论】：
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