WPF 精修篇 数据触发器

原文: WPF 精修篇 数据触发器

数据触发器 可以使用Binding 来绑定控件 或者数据源 来触发相关动作

举栗子

  
  
<Window.Resources>
<Style TargetType= "{x:Type Label}">
<Style.Triggers>
<DataTrigger Binding= "{Binding ElementName=red,Path=IsChecked}" Value= "True">
<Setter Property= "Background" Value= "Red"></Setter>
<Setter Property= "Content" Value= "Red"/>
</DataTrigger>
<DataTrigger Binding= "{Binding ElementName=Blue,Path=IsChecked}" Value= "True">
<Setter Property= "Background" Value= "Blue"></Setter>
<Setter Property= "Content" Value= "Blue"/>
</DataTrigger>
<DataTrigger Binding= "{Binding ElementName=Green,Path=IsChecked}" Value= "True">
<Setter Property= "Background" Value= "Green"></Setter>
<Setter Property= "Content" Value= "Green"/>
</DataTrigger>
</Style.Triggers>
</Style>
</Window.Resources>
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width= "301*"/>
<ColumnDefinition Width= "216*"/>
</Grid.ColumnDefinitions>
<Label FontSize= "30" Margin= "0"/>
<RadioButton x:Name= "red" Content= "red" Grid.Column= "1" HorizontalAlignment= "Left" Height= "25.837" Margin= "20,30,0,0" VerticalAlignment= "Top" Width= "104"/>
<RadioButton x:Name= "Blue" Content= "Blue" Grid.Column= "1" HorizontalAlignment= "Left" Height= "25.837" Margin= "20,91.674,0,0" VerticalAlignment= "Top" Width= "104"/>
<RadioButton x:Name= "Green" Content= "Green" Grid.Column= "1" HorizontalAlignment= "Left" Height= "25.837" Margin= "20,60.837,0,0" VerticalAlignment= "Top" Width= "104"/>

</Grid>
 
 

通过binding 可以实现很多东西哟~