我有以下用户控件:
<Border
Style="{StaticResource notificationBarBorderStyle}"
Height="21"
>
<StackPanel
Orientation="Horizontal"
Style="{StaticResource notificationBarStyle}"
>
<DockPanel>
<Image
Width="17"
Height="16"
Margin="4,0,11,0"
Source="{Binding ElementName=NotificationControl, Path=ImageSource}"
/>
<TextBlock
x:Name="notificationTextBlock"
VerticalAlignment="Center"
Style="{StaticResource textBlockStyle}"
Text="{Binding ElementName=NotificationControl, Path=Message}"
/>
</DockPanel>
</StackPanel>
</Border>
然后在另一个usercontrol中我试着像这样引用它:
<Controls:NotificationBarControl
Grid.Row="2"
Grid.Column="0"
DataContext="{Binding IncomingResult}"
Message="{Binding TaskResultsMessage}"
Visibility="{Binding Path=ShowTaskResults, Converter={StaticResource boolToHiddenVisibilityConverter}}"
Command="{Binding DisplayTaskError}"
ImageSource="{DynamicResource somePicture1}"
>
我希望能够在图像源上放置一个数据触发器,这样根据布尔标志的状态,会出现一个不同的图像(称之为somePicture2)。我真的不想做太多改变控件本身,因为它在一个相当大的项目中引用了几次而且我不想破坏任何东西。
答案 0 :(得分:1)
您可以将控件的Style
属性设置为Style
,其中DataTrigger
绑定到您的bool
属性:
<Controls:NotificationBarControl
Grid.Row="2"
Grid.Column="0"
DataContext="{Binding IncomingResult}"
Message="{Binding TaskResultsMessage}"
Visibility="{Binding Path=ShowTaskResults, Converter={StaticResource boolToHiddenVisibilityConverter}}"
Command="{Binding DisplayTaskError}">
<Controls:NotificationBarControl.Style>
<Style TargetType="Controls:NotificationBarControl">
<Setter Property="ImageSource" Value="{StaticResource somePicture1}" />
<Style.Triggers>
<DataTrigger Binding="{Binding YourBooleanSourceProperty}" Value="True">
<Setter Property="ImageSource" Value="{StaticResource somePicture2}" />
</DataTrigger>
</Style.Triggers>
</Style>
</Controls:NotificationBarControl.Style>
</Controls:NotificationBarControl>