C# XAML资源字典-无法应用默认样式

我现在面临一个非常奇怪的情况

我有一个WPF应用程序，在App.xaml中有以下几行：

<Application.Resources>
    <ResourceDictionary>
        <ResourceDictionary.MergedDictionaries>
            <ResourceDictionary>
                <local:AppBootstrapper x:Key="bootstrapper" />
            </ResourceDictionary>
            <ResourceDictionary Source="./Styles/MyTheme.xaml"/>
        </ResourceDictionary.MergedDictionaries>
    </ResourceDictionary>
</Application.Resources>

<ResourceDictionary.MergedDictionaries>
    <ResourceDictionary Source="./UserControlStyles.xaml"/>
    <ResourceDictionary Source="./WizardStyle.xaml"/>
    <ResourceDictionary Source="pack://application:,,,/MaterialDesignThemes.Wpf;component/Themes/MaterialDesignTheme.Dark.xaml" />
    <ResourceDictionary Source="pack://application:,,,/MaterialDesignThemes.Wpf;component/Themes/MaterialDesignTheme.Defaults.xaml" />
    <ResourceDictionary Source="pack://application:,,,/MaterialDesignColors;component/Themes/Recommended/Primary/MaterialDesignColor.Blue.xaml" />
    <ResourceDictionary Source="pack://application:,,,/MaterialDesignColors;component/Themes/Recommended/Accent/MaterialDesignColor.Blue.xaml" />

    <ResourceDictionary Source="./DataGridStyles.xaml"/>
    <ResourceDictionary Source="./TreeViewStyles.xaml"/>
    <ResourceDictionary Source="./ToggleButtonStyles.xaml"/>
</ResourceDictionary.MergedDictionaries>

<ResourceDictionary>
        <Style TargetType="{x:Type DataGrid}" BasedOn="{StaticResource MaterialDesignDataGrid}">
            <Setter Property="AutoGenerateColumns" Value="False" />
            <Setter Property="CanUserAddRows" Value="False" />
            <Setter Property="CanUserDeleteRows" Value="False" />
            <Setter Property="SelectionMode" Value="Single" />
        </Style>
    </ResourceDictionary>

<ResourceDictionary.MergedDictionaries>
    <ResourceDictionary Source="./UserControlStyles.xaml"/>
    <ResourceDictionary Source="./WizardStyle.xaml"/>
    <ResourceDictionary Source="pack://application:,,,/MaterialDesignThemes.Wpf;component/Themes/MaterialDesignTheme.Dark.xaml" />
    <ResourceDictionary Source="pack://application:,,,/MaterialDesignThemes.Wpf;component/Themes/MaterialDesignTheme.Defaults.xaml" />
    <ResourceDictionary Source="pack://application:,,,/MaterialDesignColors;component/Themes/Recommended/Primary/MaterialDesignColor.Blue.xaml" />
    <ResourceDictionary Source="pack://application:,,,/MaterialDesignColors;component/Themes/Recommended/Accent/MaterialDesignColor.Blue.xaml" />

    <ResourceDictionary Source="./DataGridStyles.xaml"/>
    <ResourceDictionary Source="./TreeViewStyles.xaml"/>
    <ResourceDictionary Source="./ToggleButtonStyles.xaml"/>

    <ResourceDictionary>
        <Style TargetType="{x:Type DataGrid}" BasedOn="{StaticResource MaterialDesignDataGrid}">
            <Setter Property="AutoGenerateColumns" Value="False" />
            <Setter Property="CanUserAddRows" Value="False" />
            <Setter Property="CanUserDeleteRows" Value="False" />
            <Setter Property="SelectionMode" Value="Single" />
        </Style>
    </ResourceDictionary>
</ResourceDictionary.MergedDictionaries>

然后我在MyTheme.xaml中有一些字典：

<Application.Resources>
    <ResourceDictionary>
        <ResourceDictionary.MergedDictionaries>
            <ResourceDictionary>
                <local:AppBootstrapper x:Key="bootstrapper" />
            </ResourceDictionary>
            <ResourceDictionary Source="./Styles/MyTheme.xaml"/>
        </ResourceDictionary.MergedDictionaries>
    </ResourceDictionary>
</Application.Resources>

<ResourceDictionary.MergedDictionaries>
    <ResourceDictionary Source="./UserControlStyles.xaml"/>
    <ResourceDictionary Source="./WizardStyle.xaml"/>
    <ResourceDictionary Source="pack://application:,,,/MaterialDesignThemes.Wpf;component/Themes/MaterialDesignTheme.Dark.xaml" />
    <ResourceDictionary Source="pack://application:,,,/MaterialDesignThemes.Wpf;component/Themes/MaterialDesignTheme.Defaults.xaml" />
    <ResourceDictionary Source="pack://application:,,,/MaterialDesignColors;component/Themes/Recommended/Primary/MaterialDesignColor.Blue.xaml" />
    <ResourceDictionary Source="pack://application:,,,/MaterialDesignColors;component/Themes/Recommended/Accent/MaterialDesignColor.Blue.xaml" />

    <ResourceDictionary Source="./DataGridStyles.xaml"/>
    <ResourceDictionary Source="./TreeViewStyles.xaml"/>
    <ResourceDictionary Source="./ToggleButtonStyles.xaml"/>
</ResourceDictionary.MergedDictionaries>

<ResourceDictionary>
        <Style TargetType="{x:Type DataGrid}" BasedOn="{StaticResource MaterialDesignDataGrid}">
            <Setter Property="AutoGenerateColumns" Value="False" />
            <Setter Property="CanUserAddRows" Value="False" />
            <Setter Property="CanUserDeleteRows" Value="False" />
            <Setter Property="SelectionMode" Value="Single" />
        </Style>
    </ResourceDictionary>

<ResourceDictionary.MergedDictionaries>
    <ResourceDictionary Source="./UserControlStyles.xaml"/>
    <ResourceDictionary Source="./WizardStyle.xaml"/>
    <ResourceDictionary Source="pack://application:,,,/MaterialDesignThemes.Wpf;component/Themes/MaterialDesignTheme.Dark.xaml" />
    <ResourceDictionary Source="pack://application:,,,/MaterialDesignThemes.Wpf;component/Themes/MaterialDesignTheme.Defaults.xaml" />
    <ResourceDictionary Source="pack://application:,,,/MaterialDesignColors;component/Themes/Recommended/Primary/MaterialDesignColor.Blue.xaml" />
    <ResourceDictionary Source="pack://application:,,,/MaterialDesignColors;component/Themes/Recommended/Accent/MaterialDesignColor.Blue.xaml" />

    <ResourceDictionary Source="./DataGridStyles.xaml"/>
    <ResourceDictionary Source="./TreeViewStyles.xaml"/>
    <ResourceDictionary Source="./ToggleButtonStyles.xaml"/>

    <ResourceDictionary>
        <Style TargetType="{x:Type DataGrid}" BasedOn="{StaticResource MaterialDesignDataGrid}">
            <Setter Property="AutoGenerateColumns" Value="False" />
            <Setter Property="CanUserAddRows" Value="False" />
            <Setter Property="CanUserDeleteRows" Value="False" />
            <Setter Property="SelectionMode" Value="Single" />
        </Style>
    </ResourceDictionary>
</ResourceDictionary.MergedDictionaries>

最后还有一个DataGrid，我希望在默认情况下应用于我的应用程序的所有DataGrid（在DataGridStyles.xaml中）：

出于某种原因，DataGrid样式不适用，但如果我将其直接放在MyTheme.xaml中，它就会工作：

<Application.Resources>
    <ResourceDictionary>
        <ResourceDictionary.MergedDictionaries>
            <ResourceDictionary>
                <local:AppBootstrapper x:Key="bootstrapper" />
            </ResourceDictionary>
            <ResourceDictionary Source="./Styles/MyTheme.xaml"/>
        </ResourceDictionary.MergedDictionaries>
    </ResourceDictionary>
</Application.Resources>

<ResourceDictionary.MergedDictionaries>
    <ResourceDictionary Source="./UserControlStyles.xaml"/>
    <ResourceDictionary Source="./WizardStyle.xaml"/>
    <ResourceDictionary Source="pack://application:,,,/MaterialDesignThemes.Wpf;component/Themes/MaterialDesignTheme.Dark.xaml" />
    <ResourceDictionary Source="pack://application:,,,/MaterialDesignThemes.Wpf;component/Themes/MaterialDesignTheme.Defaults.xaml" />
    <ResourceDictionary Source="pack://application:,,,/MaterialDesignColors;component/Themes/Recommended/Primary/MaterialDesignColor.Blue.xaml" />
    <ResourceDictionary Source="pack://application:,,,/MaterialDesignColors;component/Themes/Recommended/Accent/MaterialDesignColor.Blue.xaml" />

    <ResourceDictionary Source="./DataGridStyles.xaml"/>
    <ResourceDictionary Source="./TreeViewStyles.xaml"/>
    <ResourceDictionary Source="./ToggleButtonStyles.xaml"/>
</ResourceDictionary.MergedDictionaries>

<ResourceDictionary>
        <Style TargetType="{x:Type DataGrid}" BasedOn="{StaticResource MaterialDesignDataGrid}">
            <Setter Property="AutoGenerateColumns" Value="False" />
            <Setter Property="CanUserAddRows" Value="False" />
            <Setter Property="CanUserDeleteRows" Value="False" />
            <Setter Property="SelectionMode" Value="Single" />
        </Style>
    </ResourceDictionary>

<ResourceDictionary.MergedDictionaries>
    <ResourceDictionary Source="./UserControlStyles.xaml"/>
    <ResourceDictionary Source="./WizardStyle.xaml"/>
    <ResourceDictionary Source="pack://application:,,,/MaterialDesignThemes.Wpf;component/Themes/MaterialDesignTheme.Dark.xaml" />
    <ResourceDictionary Source="pack://application:,,,/MaterialDesignThemes.Wpf;component/Themes/MaterialDesignTheme.Defaults.xaml" />
    <ResourceDictionary Source="pack://application:,,,/MaterialDesignColors;component/Themes/Recommended/Primary/MaterialDesignColor.Blue.xaml" />
    <ResourceDictionary Source="pack://application:,,,/MaterialDesignColors;component/Themes/Recommended/Accent/MaterialDesignColor.Blue.xaml" />

    <ResourceDictionary Source="./DataGridStyles.xaml"/>
    <ResourceDictionary Source="./TreeViewStyles.xaml"/>
    <ResourceDictionary Source="./ToggleButtonStyles.xaml"/>

    <ResourceDictionary>
        <Style TargetType="{x:Type DataGrid}" BasedOn="{StaticResource MaterialDesignDataGrid}">
            <Setter Property="AutoGenerateColumns" Value="False" />
            <Setter Property="CanUserAddRows" Value="False" />
            <Setter Property="CanUserDeleteRows" Value="False" />
            <Setter Property="SelectionMode" Value="Single" />
        </Style>
    </ResourceDictionary>
</ResourceDictionary.MergedDictionaries>

请注意，MaterialDesignDataGrid是在MaterialDesignTheme.Defaults.xaml中定义的

这是一种预期的行为吗？我做错什么了吗

---

非常感谢您抽出时间。

请为DataGridStyles.xaml的生成操作尝试不同的设置。我认为如果您将其设置为Page，它应该可以工作。

尝试为DataGridStyles.xaml的构建操作设置不同的设置。我想如果你把它设置为Page，它应该可以工作。

你试过用

DynamicResource

而不是

StaticResource

吗？如果你是说

，是的，我试过了，但不起作用。你试过用

DynamicResource

而不是

StaticResource

吗？如果你是说

，是的，我试过了，但它不起作用。康奈尔，这可能是一个与ResourceDictionary合并的顺序有关的问题。Connell，这可能是一个与ResourceDictionary合并的顺序有关的问题。