WPF Demo2

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<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：