为什么鼠标事件在父对象中不适用于相同事件？

Question

我有两个边界通过动画互相替换，由 mouseenter 和 mouseleave 事件触发。而且我在一个边界上还有一个按钮，mouseenter =“ test_mouseenter” mousedown =“ test_mousedown”。
XAML：

<UserControl.Resources>
        <Storyboard x:Key="FirstCardStoryboard">
            <DoubleAnimation
                 Duration="0:0:0.2"
                Storyboard.TargetName="FirstBorder" 
                Storyboard.TargetProperty="Opacity"/>
        </Storyboard>
        <Storyboard x:Key="SecondCardStoryboard">
            <DoubleAnimation
                 Duration="0:0:0.2"
                Storyboard.TargetName="SecondBorder" 
                Storyboard.TargetProperty="Opacity"/>
        </Storyboard>
    </UserControl.Resources>
    
    <Grid MouseEnter="Grid_MouseEnter" MouseLeave="Grid_MouseLeave">
        <Border x:Name="FirstBorder" Width="170" Height="210" CornerRadius="15" BorderThickness="2" Background="#FF323236" BorderBrush="Cyan">
            <StackPanel VerticalAlignment="Center">
                <Button x:Name="Test" Width="130" Height="30" MouseEnter="Test_MouseEnter" Click="Test_Click">
                </Button>
            </StackPanel>
        </Border>
        <Border x:Name="SecondBorder" Width="170" Height="210" CornerRadius="15" BorderThickness="2" 
                Background="#FF323236" BorderBrush="Cyan" >
            <Grid>
                <Grid.RowDefinitions>
                    <RowDefinition Height="*"/>
                    <RowDefinition Height="40"/>
                </Grid.RowDefinitions>

            </Grid>
        </Border>
    </Grid>

和C＃侧：

public partial class ProductControl : UserControl
{
    public ProductControl()
    {
        InitializeComponent();
    }

    private void Grid_MouseEnter(object sender, MouseEventArgs e)
    {
        Storyboard storyboard = (this.Resources["FirstCardStoryboard"] as Storyboard);
        DoubleAnimation animation = storyboard.Children.First() as DoubleAnimation;
        animation.To = 1;
        storyboard.Begin();

        Storyboard storyboardSecond = (this.Resources["SecondCardStoryboard"] as Storyboard);
        DoubleAnimation animationSecond = storyboardSecond.Children.First() as DoubleAnimation;
        animationSecond.To = 0;
        storyboardSecond.Begin();
    }

    private void Grid_MouseLeave(object sender, MouseEventArgs e)
    {
        Storyboard storyboard = (this.Resources["FirstCardStoryboard"] as Storyboard);
        DoubleAnimation animation = storyboard.Children.First() as DoubleAnimation;
        animation.To = 0;
        storyboard.Begin();

        Storyboard storyboardSecond = (this.Resources["SecondCardStoryboard"] as Storyboard);
        DoubleAnimation animationSecond = storyboardSecond.Children.First() as DoubleAnimation;
        animationSecond.To = 1;
        storyboardSecond.Begin();
    }

    private void Test_MouseEnter(object sender, MouseEventArgs e)
    {

    }

    private void Test_Click(object sender, RoutedEventArgs e)
    {
        
    }

}

然后，我将断点放在 test_mouseenter 和 test_mousedown 方法上它。
这是因为 grid 带有mouseenter =“ grid_mouseenter” mouseleave =“ grid_mouseleave”还是还有另一个原因？如果网格停止事件，这是通过此事件的方法吗？

我在按钮上测试了 click =“ test_click” ，但这也不起作用。

Answer 1

我发现了这个问题。我只改变了边界的不透明度，但它们仍然在那里。因此，第二个边境处理了所有事件。因此，我还需要更改动画中边界的可见性。
或正如@clemens所说，我只能更改 iShittestvisible 。