我正在研究WPF应用程序,如果只有一个按钮具有焦点,我想改变网格的可见性。如果有焦点,我有以下代码来更改按钮的背景。我知道如何以编程方式执行此操作,但我想知道如何在XAML中完成相同的操作。
<Style TargetType="{x:Type Button}">
<Style.Triggers>
<Trigger Property="IsFocused" Value="True">
<Setter Property="Background" Value="Aqua" />
</Trigger>
</Style.Triggers>
</Style>
答案 0 :(得分:1)
您可以为Button命名并使用DataTrigger:
<Window
...
>
<Window.Resources>
<Style TargetType="{x:Type Grid}">
<Style.Triggers>
<DataTrigger Binding="{Binding IsFocused, ElementName=butt}" Value="True">
<Setter Property="Visibility" Value="Collapsed" />
</DataTrigger>
</Style.Triggers>
</Style>
</Window.Resources>
<StackPanel>
<Button x:Name="butt">Hide</Button>
<Grid>
<Label Background="Yellow">Inside Grid</Label>
</Grid>
<Button>Steal focus</Button>
</StackPanel>
</Window>
修改强>
<Window
...
>
<Window.Resources>
<Style x:Key="CollapsedGridStyle" TargetType="{x:Type Grid}">
<Style.Triggers>
<DataTrigger Binding="{Binding IsChecked, ElementName=butt}" Value="True">
<Setter Property="Visibility" Value="Collapsed" />
</DataTrigger>
</Style.Triggers>
</Style>
</Window.Resources>
<StackPanel>
<ToggleButton x:Name="butt">Hide</ToggleButton>
<Grid x:Name="GridA"
Style="{StaticResource CollapsedGridStyle}">
<Label Background="Yellow">Grid A</Label>
</Grid>
<Grid x:Name="GridB">
<Label Background="Green">Grid B</Label>
</Grid>
</StackPanel>
</Window>