使用 VisualStateManager 更改按钮按下时的背景图像
我有这个按钮：
<Button x:Name="PrevAdIcon" Tag="-1" Visibility="Collapsed" Width="80" Height="80" Click="PrevAd">
<Button.Background>
<ImageBrush AlignmentY="Top" Stretch="None" ImageSource="/Images/prev.png"></ImageBrush>
</Button.Background>
</Button>
当用户按下按钮时，如何将背景更改为 /Images/prev-selected.png ？它会给他一个反馈，因为这是一个 WP7 应用程序，
我到目前为止（不工作）：
<vsm:VisualState x:Name="Pressed">
<Storyboard>
<ObjectAnimationUsingKeyFrames BeginTime="00:00:00" Duration="00:00:00.0010000" Storyboard.TargetName="Background" Storyboard.TargetProperty="Background">
<DiscreteObjectKeyFrame KeyTime="0">
<DiscreteObjectKeyFrame.Value>
<ImageBrush ImageSource="/Images/prev-selected.png" Stretch="Fill"/>
</DiscreteObjectKeyFrame.Value>
</DiscreteObjectKeyFrame>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</vsm:VisualState>
I have this button :
<Button x:Name="PrevAdIcon" Tag="-1" Visibility="Collapsed" Width="80" Height="80" Click="PrevAd">
<Button.Background>
<ImageBrush AlignmentY="Top" Stretch="None" ImageSource="/Images/prev.png"></ImageBrush>
</Button.Background>
</Button>
How can I change the background to /Images/prev-selected.png when a user pressed the button ? It'll give him a feedback, since it's a WP7 app
what I have so far (not working) :
<vsm:VisualState x:Name="Pressed">
<Storyboard>
<ObjectAnimationUsingKeyFrames BeginTime="00:00:00" Duration="00:00:00.0010000" Storyboard.TargetName="Background" Storyboard.TargetProperty="Background">
<DiscreteObjectKeyFrame KeyTime="0">
<DiscreteObjectKeyFrame.Value>
<ImageBrush ImageSource="/Images/prev-selected.png" Stretch="Fill"/>
</DiscreteObjectKeyFrame.Value>
</DiscreteObjectKeyFrame>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</vsm:VisualState>
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评论（3）
据我所知，您无法使用 VisualStateManager 更改 Image 元素上的 Source 属性的值。但是，您只需向 ControlTemplate 添加两个 Image 元素：一个用于正常状态，一个用于按下状态，然后在按下状态下切换可见性。
As far as I know, you can't change the value of the Source property on the Image element by using the VisualStateManager. However, you can just add two Image elements to the ControlTemplate: one for the Normal state and one for the Pressed state, and toggle the Visibility in the Pressed state.
请参阅 Peter Torr 的帖子“为什么我不能在点击事件上更改按钮的背景？" 了解如何执行此操作的示例和说明。
See Peter Torr's post on "Why can't I change the Background of my Button on a Click event?" for an example and explanation of how to do this.
要向德里克的答案添加更多信息，您应该查看 Gambit 的答案 此处获取有效的完整 XAML
To add more information to Derek's answer, you should look at Gambit's answer here for full XAML that works