Question

我有一个FlipView控制女巫，包含有关图像的图像和文字。我希望文本与图像的宽度相同。有些图像的尺寸与其他图像不同这是我的XAML代码：

<FlipView x:Name="flipView"  HorizontalContentAlignment="Center" VerticalContentAlignment="Center" ItemsSource="{Binding ImagesWithDescriptions}">
    <FlipView.ItemTemplate>
        <DataTemplate>
            <Grid x:Name="grid" Tapped="flipView_Tapped">
                <Grid.RowDefinitions>
                    <RowDefinition Height="3*"/>
                    <RowDefinition />
                </Grid.RowDefinitions>
                <Image x:Name="image" Grid.RowSpan="2" Source="{Binding Image}"></Image>
                <Grid x:Name="textGrid" Grid.Row="1">
                    <Grid.Background>
                        <SolidColorBrush Color="Black" Opacity="0.5"/>
                    </Grid.Background>
                    <TextBlock Foreground="White" HorizontalAlignment="Left" FontSize="20" Text="{Binding Description}"/>
                </Grid>
            </Grid>
        </DataTemplate>
    </FlipView.ItemTemplate>
</FlipViewControl>

如果我尝试将文本绑定到图像的ActualWidth，它总是返回0.有没有办法做到这一点？

修改
它看起来像这样：

(------------------FlipView width----------------------)
--------------------------------------------------------F
|          |This is Image. It's height is |            |l
|          |equals to FlipView's height,  |            |i
|          |but width depends on picture's|            |p
|          |ratio, which might differ on  |            |V
|          |some pictures.                |            |i
|          |                              |            |e
|          |                              |            |w
|          |                              |            |
|          |                              |            |h
|          |                              |            |e
|----------|------------------------------|------------|i
|This is   |where Grid named "textGrid" is|now (it's   |g
|width is  |the same as FlipView's)       |            |h
--------------------------------------------------------t

但我希望名为“textGrid”的Grid具有与Image相同的宽度绑定<Grid x:Name="textGrid" Width="{Binding ElementName=image, Path=ActualWidth}"/>导致Grid的宽度始终等于0. Image Loaded事件也将ActualWidth返回为0。

Answer 1

    def calculate_volume(self): return averager( self.nodes, 'get_compartment_volume')

    def get_contraction(self): return averager( self.branches, 'get_contraction' )

在更改集合时绑定到ActualWidth

1 个答案: