C# Metro（MahApps）WPF：覆盖选项卡项样式

对于WPF的MahApps Metro，我有很多喜欢的地方，也有一些我不太喜欢的地方。其中之一是Metro标签样式，所以我正在尝试调整它。或者写我自己的，真的

<Style TargetType="TabItem" BasedOn="{StaticResource MetroTabItem}">
    <Setter Property="Background" Value="Red" />
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="TabItem">
                <TextBlock Text="Tab" />
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>

我的问题是，虽然我可以创建选项卡控件样式，但我似乎根本无法覆盖TabItem样式。我已经开始简单：只是红色，静态文本，不管有什么。但我甚至不能做到这一点。它一直使用地铁风格

<Style TargetType="TabItem" BasedOn="{StaticResource MetroTabItem}">
    <Setter Property="Background" Value="Red" />
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="TabItem">
                <TextBlock Text="Tab" />
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>

（通过Caliburn.Micro进行绑定。）

<Style TargetType="TabItem" BasedOn="{StaticResource MetroTabItem}">
    <Setter Property="Background" Value="Red" />
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="TabItem">
                <TextBlock Text="Tab" />
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>

ShellView.xaml:

<TabControl Style="{StaticResource TabControlStyle}" DockPanel.Dock="Top"
    x:Name="AvailableTabs">
    <TabControl.ItemTemplate>
        <DataTemplate>
            <TextBlock Text="{Binding DisplayName}" />
        </DataTemplate>
    </TabControl.ItemTemplate>
</TabControl>

<ResourceDictionary Source="Resources/CustomControls.xaml" />

<!-- MahApps.Metro resource dictionaries. Make sure that all file names are Case Sensitive! -->
<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" />
<!-- Accent and AppTheme setting -->
<ResourceDictionary Source="pack://application:,,,/MahApps.Metro;component/Styles/Accents/Blue.xaml" />
<ResourceDictionary Source="pack://application:,,,/MahApps.Metro;component/Styles/Accents/BaseLight.xaml" />

<Style TargetType="TabItem" BasedOn="{StaticResource MetroTabItem}">
    <Setter Property="Background" Value="Red" />
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="TabItem">
                <TextBlock Text="Tab" />
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>

内部App.xaml:

<TabControl Style="{StaticResource TabControlStyle}" DockPanel.Dock="Top"
    x:Name="AvailableTabs">
    <TabControl.ItemTemplate>
        <DataTemplate>
            <TextBlock Text="{Binding DisplayName}" />
        </DataTemplate>
    </TabControl.ItemTemplate>
</TabControl>

<ResourceDictionary Source="Resources/CustomControls.xaml" />

<!-- MahApps.Metro resource dictionaries. Make sure that all file names are Case Sensitive! -->
<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" />
<!-- Accent and AppTheme setting -->
<ResourceDictionary Source="pack://application:,,,/MahApps.Metro;component/Styles/Accents/Blue.xaml" />
<ResourceDictionary Source="pack://application:,,,/MahApps.Metro;component/Styles/Accents/BaseLight.xaml" />

<Style TargetType="TabItem" BasedOn="{StaticResource MetroTabItem}">
    <Setter Property="Background" Value="Red" />
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="TabItem">
                <TextBlock Text="Tab" />
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>

选项卡控件/项目样式：

<TabControl Style="{StaticResource TabControlStyle}" DockPanel.Dock="Top"
    x:Name="AvailableTabs">
    <TabControl.ItemTemplate>
        <DataTemplate>
            <TextBlock Text="{Binding DisplayName}" />
        </DataTemplate>
    </TabControl.ItemTemplate>
</TabControl>

<ResourceDictionary Source="Resources/CustomControls.xaml" />

<!-- MahApps.Metro resource dictionaries. Make sure that all file names are Case Sensitive! -->
<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" />
<!-- Accent and AppTheme setting -->
<ResourceDictionary Source="pack://application:,,,/MahApps.Metro;component/Styles/Accents/Blue.xaml" />
<ResourceDictionary Source="pack://application:,,,/MahApps.Metro;component/Styles/Accents/BaseLight.xaml" />

<Style TargetType="TabItem" BasedOn="{StaticResource MetroTabItem}">
    <Setter Property="Background" Value="Red" />
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="TabItem">
                <TextBlock Text="Tab" />
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>

<Style TargetType="TabItem" BasedOn="{StaticResource MetroTabItem}">
    <Setter Property="Background" Value="Red" />
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="TabItem">
                <TextBlock Text="Tab" />
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>

<Style TargetType="TabItem" BasedOn="{StaticResource MetroTabItem}">
    <Setter Property="Background" Value="Red" />
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="TabItem">
                <TextBlock Text="Tab" />
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>

结果：

<Style TargetType="TabItem" BasedOn="{StaticResource MetroTabItem}">
    <Setter Property="Background" Value="Red" />
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="TabItem">
                <TextBlock Text="Tab" />
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>

TabControl的风格确实有效——选项卡和内容之间水平线的存在就足以证明这一点。我还尝试在样式中使用

{DynamicResource WhiteBrush}

（来自mahapps），以查看它是否可能找不到mahapps资源，但效果很好。但是标签本身仍然使用Metro风格

<Style TargetType="TabItem" BasedOn="{StaticResource MetroTabItem}">
    <Setter Property="Background" Value="Red" />
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="TabItem">
                <TextBlock Text="Tab" />
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>

我做错了什么？这让我快发疯了，我无法摆脱这样一种感觉：我正在做一件既简单又愚蠢的事情

<Style TargetType="TabItem" BasedOn="{StaticResource MetroTabItem}">
    <Setter Property="Background" Value="Red" />
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="TabItem">
                <TextBlock Text="Tab" />
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>

---

（另外，我尝试将

BasedOn={StaticResource MetroTabItem}

添加到TabItem样式中，但也不起作用。）

这是引用全局/隐式样式的顺序

<Style TargetType="TabItem" BasedOn="{StaticResource MetroTabItem}">
    <Setter Property="Background" Value="Red" />
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="TabItem">
                <TextBlock Text="Tab" />
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>

Resources/CustomControls.xaml中的样式

<Style TargetType="TabItem" BasedOn="{StaticResource MetroTabItem}">
    <Setter Property="Background" Value="Red" />
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="TabItem">
                <TextBlock Text="Tab" />
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>

<Style TargetType="TabItem" BasedOn="{StaticResource MetroTabItem}">
    <Setter Property="Background" Value="Red" />
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="TabItem">
                <TextBlock Text="Tab" Padding="10" Margin="1,0" 
                           Background="{TemplateBinding Background}" />
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>