MahApps 中的样式 "Cannot find resource 'MetroCheckBox'"

Question

我开始在 WPF 中使用样式。我使用 MahApps 样式作为基础，到目前为止效果非常好。我已经能够使用 BasedOn 属性.

进行特定修改

其中一项更简单的更改是添加默认边距，以便在添加控件时它们不会接触。在我尝试使用 MetroCheckBox 之前，它一直运行良好。使用此特定控件，它会抛出一个 xaml 解析异常："Cannot find resource named 'MetroCheckBox'. Resource names are case sensitive."

我查看了源代码，试图找出这个问题并直接从 GitHub:

复制了名称

https://github.com/MahApps/MahApps.Metro/blob/master/MahApps.Metro/Styles/Controls.CheckBox.xaml

肯定是这样，我的所有其他控件都工作正常：

        <Style TargetType="{x:Type Button}" BasedOn="{StaticResource MetroButton}">
            <Setter Property="Margin" Value="2"/>
        </Style>

        <Style TargetType="{x:Type ComboBox}" BasedOn="{StaticResource MetroComboBox}">
            <Setter Property="Margin" Value="2"/>
        </Style>

        <Style TargetType="{x:Type CheckBox}" BasedOn="{StaticResource MetroCheckBox}">
            <Setter Property="Margin" Value="2"/>
        </Style>

        <Style TargetType="{x:Type TextBox}" BasedOn="{StaticResource MetroTextBox}">
            <Setter Property="Margin" Value="2"/>
        </Style>

关于如何解决这个问题有什么想法吗？

请注意，我包括了对样式的引用，如下所示：

<Application
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:extra="http://schemas.extra.com/ui"
xmlns:system="clr-namespace:System;assembly=mscorlib"
xmlns:visualizationToolkit="clr-namespace:System.Windows.Controls.DataVisualization;assembly=System.Windows.Controls.DataVisualization.Toolkit"
xmlns:chartingToolkit="clr-namespace:System.Windows.Controls.DataVisualization.Charting;assembly=System.Windows.Controls.DataVisualization.Toolkit"
xmlns:Primitives="clr-namespace:System.Windows.Controls.DataVisualization.Charting.Primitives;assembly=System.Windows.Controls.DataVisualization.Toolkit"
xmlns:Themes="clr-namespace:Microsoft.Windows.Themes;assembly=PresentationFramework.Aero"
xmlns:Custom="http://metro.mahapps.com/winfx/xaml/controls"
x:Class="MyApp.App"
StartupUri="/MyApp;component/GUI/Window/Window3.xaml"
>

<Application.Resources>       
    <ResourceDictionary>
        <ResourceDictionary.MergedDictionaries>
            <ResourceDictionary Source="pack://application:,,,/MahApps.Metro;component/Styles/Controls.xaml" />
            <ResourceDictionary Source="pack://application:,,,/MahApps.Metro;component/Styles/Fonts.xaml" />
            <ResourceDictionary Source="pack://application:,,,/MahApps.Metro;component/Styles/Colors.xaml" />
            <ResourceDictionary Source="pack://application:,,,/MahApps.Metro;component/Styles/Accents/Blue.xaml" />
            <ResourceDictionary Source="pack://application:,,,/MahApps.Metro;component/Styles/Accents/BaseDark.xaml" />
        </ResourceDictionary.MergedDictionaries>

        <Style TargetType="{x:Type Button}" BasedOn="{StaticResource MetroButton}">
            <Setter Property="Margin" Value="2"/>
        </Style>

        <Style TargetType="{x:Type ComboBox}" BasedOn="{StaticResource MetroComboBox}">
            <Setter Property="Margin" Value="2"/>
        </Style>

        <!--<Style TargetType="{x:Type CheckBox}" BasedOn="{StaticResource MetroCheckBox}">
            <Setter Property="Margin" Value="2"/>
        </Style>-->

        <Style TargetType="{x:Type TextBox}" BasedOn="{StaticResource MetroTextBox}">
            <Setter Property="Margin" Value="2"/>
        </Style>

        <!--Chart Style-->
        <Style TargetType="{x:Type chartingToolkit:Chart}
    ...
        </Style>

        <!--Top Tab Item-->
        <Style x:Key="TopTabItemStyle" TargetType="{x:Type TabItem}" BasedOn="{StaticResource {x:Type TabItem}}">
            ...
        </Style>

        <!--Tab Item-->
        <Style TargetType="{x:Type TabItem}" BasedOn="{StaticResource MetroTabItem}">
    ...
        </Style>

        <!-- Group Box-->
        <Style TargetType="{x:Type GroupBox}" BasedOn="{StaticResource MetroGroupBox}">
            <!--<Setter Property="Margin" Value="5"/>
            <Setter Property="Padding" Value="5"/>
            <Setter Property="Foreground" Value="{DynamicResource BlackBrush}"/>
            <Setter Property="Background" Value="{DynamicResource AccentColorBrush}"/>
            <Setter Property="BorderBrush" Value="{DynamicResource AccentColorBrush}"/>
            <Setter Property="Custom:ControlsHelper.HeaderFontSize" Value="{DynamicResource ContentFontSize}"/>
            <Setter Property="Custom:GroupBoxHelper.HeaderForeground" Value="{x:Null}"/>-->
            <Setter Property="Custom:ControlsHelper.HeaderFontWeight" Value="SemiBold"/>
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="{x:Type GroupBox}">
                        <Grid x:Name="GroupBoxRoot">
                            <Grid.RowDefinitions>
                                <RowDefinition Height="Auto"/>
                                <RowDefinition Height="*"/>
                            </Grid.RowDefinitions>
                            <Border BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="0,0,0,2" Background="Transparent" Grid.Row="0">
                                <ContentPresenter ContentTemplate="{TemplateBinding HeaderTemplate}" Content="{TemplateBinding Header}" ContentStringFormat="{TemplateBinding HeaderStringFormat}" ContentSource="Header" TextElement.FontWeight="{TemplateBinding Custom:ControlsHelper.HeaderFontWeight}" TextElement.FontStretch="{TemplateBinding Custom:ControlsHelper.HeaderFontStretch}" TextElement.FontSize="{TemplateBinding Custom:ControlsHelper.HeaderFontSize}" Margin="{TemplateBinding Padding}" RecognizesAccessKey="True"/>
                            </Border>
                            <Border BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="0" Background="Transparent" Grid.Row="1">
                                <ContentPresenter Cursor="{TemplateBinding Cursor}" ContentTemplate="{TemplateBinding ContentTemplate}" Content="{TemplateBinding Content}" Margin="{TemplateBinding Padding}"/>
                            </Border>
                        </Grid>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </Style>
    </ResourceDictionary>
</Application.Resources>

Answer 1

您缺少引入 MahApps 样式所需的 ResourceDictionary。您可以将 ResourceDictionary 定义包含在您正在编写视图的 XAML 文件的 XAML 中，也可以将其添加到 APP.XAML 文件中 - 后者会给您带来更好的效果短期表现。

例如：这里是其他 MahApps 资源字典中包含的 MahApps 控件 xaml，在这种情况下，控件 xaml 就是您需要的控件：

<Application x:Class="MyApp"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
    <Application.Resources>

        <ResourceDictionary>
            <ResourceDictionary.MergedDictionaries>

                <ResourceDictionary Source="pack://application:,,,/MahApps.Metro;component/Styles/Controls.xaml" />
                <ResourceDictionary Source="pack://application:,,,/MahApps.Metro;component/Styles/Fonts.xaml" />
                <ResourceDictionary Source="pack://application:,,,/MahApps.Metro;component/Styles/Colors.xaml" />
                <ResourceDictionary Source="pack://application:,,,/MahApps.Metro;component/Styles/Accents/Blue.xaml" />
                <ResourceDictionary Source="pack://application:,,,/MahApps.Metro;component/Styles/Accents/BaseLight.xaml" />

            </ResourceDictionary.MergedDictionaries>

        </ResourceDictionary>       

    </Application.Resources>
</Application>

Answer 2

我今天运行它工作正常：

        <Style TargetType="{x:Type ComboBox}" BasedOn="{StaticResource MetroComboBox}">
            <Setter Property="Margin" Value="2"/>
        </Style>

据我所知，我所做的更改与项目或参考文献无关。

但是，在过去的几天里，Visual Studio 以某种方式损坏，设计人员在左右和中间抛出异常，解决方案资源管理器无法显示任何内容（已在清除组件模型缓存后修复）并且 NuGet 无法工作让我检查 MahApps 版本。

所以我在修复安装时启动了安装程序，现在样式正常了。

我不知道这些是否相关...但它们可能是相关的，所以我会留下这个作为答案，以防其他人遇到同样的问题。

Answer 3

如果您从 2.0 之前的 MahApps 版本升级到更新的版本，可能会导致这种情况。

详情请见： mahapps.com：迁移到 v2.0 - MahApps.Metro https://mahapps.com/docs/guides/migration-to-v2.0

MahApps 中的样式 "Cannot find resource 'MetroCheckBox'"

Style "Cannot find resource 'MetroCheckBox'" in MahApps

c#

wpf

xaml

styles

mahapps.metro