3，WPF 四大触发器总结

参考：
https://blog.csdn.net/lhx527099095/article/details/8029207
例子1 简单触发器Triggers——满足简答的条件，触发

<Window x:Class="Styles.SimpleTriggers"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="SimpleTriggers" Height="300" Width="300"
    >
  <Window.Resources>
    <Style x:Key="BigFontButton">
      <Style.Setters>
        <Setter Property="Control.FontFamily" Value="Times New Roman" />
        <Setter Property="Control.FontSize" Value="10" />
      </Style.Setters>
      <Style.Triggers>
        <Trigger Property="Control.IsFocused" Value="True">
          <Setter Property="Control.Foreground" Value="DarkRed" />
        </Trigger>
        <!--<Trigger Property="Control.IsMouseOver" Value="True">
          <Setter Property="Control.Foreground" Value="LightYellow" />
          <Setter Property="Control.FontWeight" Value="Bold" />
        </Trigger>        
        <Trigger Property="Button.IsPressed" Value="True">
          <Setter Property="Control.Foreground" Value="Red" />
        </Trigger>-->
      </Style.Triggers>
    </Style>
  </Window.Resources>
  <StackPanel Margin="5">
    <Button Padding="5" Margin="5"
            Style="{StaticResource BigFontButton}" 
              >A Customized Button</Button>
    <TextBlock Margin="5">Normal Content.</TextBlock>
    <Button Padding="5" Margin="5"
            >A Normal Button</Button>
    <TextBlock Margin="5">More normal Content.</TextBlock>
    <Button Padding="5" Margin="5"
            Style="{StaticResource BigFontButton}" 
              >Another Customized Button</Button>
  </StackPanel>
</Window>

例子2 条件多触发MultiTriggers——满足多条件才触发








例子3 事件触发器EventTrigger——在特定的路由事件发生时被触发，主要用于动画。

例字4 数据触发器DataTrigger——根据绑定的数据不同显示不同的内容。



Background=”Transparent” DataContext=”{Binding}” PreviewMouseMove=”TreeItem_PreviewMouseMove”>