WPF Demo2

<Window x:Class="Demo2.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">
    <!--窗体级别资源-->
    <Window.Resources>
        <Style x:Key="{x:Type Button}" TargetType="{x:Type Button}">
            <Setter Property="Width" Value="50"/>
            <Setter Property="Height" Value="50"/>
            <Setter Property="Margin" Value="10"/>
            <Setter Property="FontStyle" Value="Italic"/>
            <Setter Property="Foreground" Value="Red"/>
        </Style>
    </Window.Resources>

    <Grid>
        <!--水平流式布局，默认垂直-->
        <StackPanel Orientation="Horizontal">
            <Button Content="ok"/>
            <Button Content="ok"/>
            <Button Content="ok"/>
            <Button Content="ok" Style="{x:Null}"/>
            <!--主动显示设置控件样式，可替换 窗体级别设置的资源属性，就近样式原则-->
            <Button>
                <Button.Style>
                    <x:Null/>
                </Button.Style>
            </Button>
        </StackPanel>
    </Grid>
</Window>

运行效果如下：