覆盖应用程序范围的样式 [英] Overriding application wide style

问题描述

我想为应用程序中的textblock定义一个全局样式，但是我也希望能够覆盖此默认样式.我一直认为样式的局部优先级要比全局优先级高，但是事实并非如此?

I want to define a global style for textblock in the application but I also want to be able to override this default style. I always thought that the local override of style has more priority than the global one but it doesn't seems to be the case?

在下面的示例中，当我期望按钮的内容为"Aqua"时，其内容为"Test"的按钮将具有"Red"的前景.如果我在Application.Resources中删除全局样式，那么它将起作用.我想念什么吗?

In the following example, the Button with content "Test" will have a "Red" foreground when I expect it to be "Aqua". If I remove the global style in Application.Resources, than it will works. Did I'm missing something?

App.xaml

<Application x:Class="ContextMenuTest.App"
         xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
         StartupUri="MainWindow.xaml">
<Application.Resources>
    <Style TargetType="{x:Type TextBlock}">
        <Setter Property="Foreground" Value="Red" />
    </Style>
</Application.Resources>

MainWindow.xaml

MainWindow.xaml

<Window x:Class="ContextMenuTest.MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="MainWindow" Height="350" Width="525">
<Window.Resources>
    <Style TargetType="{x:Type MenuItem}" x:Key="DefaultMenuItemStyle">
        <Setter Property="Foreground" Value="DarkGreen" />
    </Style>

    <Style TargetType="{x:Type Button}" x:Key="DefaultButtonStyle">
        <Setter Property="Foreground" Value="DarkGreen" />
    </Style>
</Window.Resources>

<Grid Background="Black">
    <Grid.ContextMenu>
        <ContextMenu>
            <MenuItem Header="Menu 1" Style="{StaticResource DefaultMenuItemStyle}" />
            <MenuItem Header="Menu 2" Style="{StaticResource DefaultMenuItemStyle}" />
            <MenuItem Header="Menu 3" Style="{StaticResource DefaultMenuItemStyle}" />
            <MenuItem Header="Menu 4" Style="{StaticResource DefaultMenuItemStyle}" />
            <MenuItem Header="Menu 5" Style="{StaticResource DefaultMenuItemStyle}" />
        </ContextMenu>
    </Grid.ContextMenu>

    <Button Content="Test" Style="{StaticResource DefaultButtonStyle}" Foreground="Aqua" />
</Grid>

推荐答案

在App.xaml中定义的隐式TextBlock将不会被其他TextBlock样式覆盖.因此，建议您将默认的TextBlock样式移至例如<Window.Resources>.

Implicit TextBlock defined in App.xaml will not be overrided by other TextBlock styles. It's therefore recommended that you move your default TextBlock style to for example <Window.Resources>.

有关此的更多信息，请参考以下链接.

Please refer to the following links for more information about this.

Application.Resources与Window.Resources中的隐式样式?

跳过App.xaml中的属性"设置: 或者根本不定义任何隐式的TextBlock样式.为每个Control定义一个默认的Style.

Or simply don't define any implicit TextBlock style. Define a default Style for each Control instead.

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