1.概要
2.代码
<Window x:Class="WpfApp2.Window10"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:local="clr-namespace:WpfApp2"
mc:Ignorable="d"
Title="Window10" Height="450" Width="800">
<Window.Resources>
<Style TargetType="CheckBox">
<!--Triggers不是Style的内容属性,<Style.Triggers>...</Style.Triggers>这层标签不能省略-->
<Style.Triggers>
<Trigger Property="IsChecked" Value="true">
<!--Trigger的Setters属性是Trigger的内容属性,<Trigger.Setters.…</Trigger.Seters>这层标签可以省略-->
<!--<Trigger.Setters>-->
<Setter Property="FontSize" Value="20"/>
<Setter Property="Foreground" Value="Orange"/>
<!--</Trigger.Setters>-->
</Trigger>
</Style.Triggers>
</Style>
</Window.Resources>
<StackPanel>
<CheckBox Content="悄悄的我走了" Margin="5"/>
<CheckBox Content="正如我悄悄的来" Margin="5,0"/>
<CheckBox Content="我挥一挥衣袖" Margin="5"/>
<CheckBox Content="不带走一片云彩" Margin="5,0"/>
</StackPanel>
</Window>
3.运行效果

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