使用多重绑定的字符串格式？

发布于 2024-12-19 14:31:06 字数 1063 浏览 2 评论 0原文

我正在尝试使用 Label 控件在 XAML 中显示字符串。以下是我的 XAML 代码：

<Label Height="28" HorizontalAlignment="Left" Margin="233,68,0,0" Name="label13" VerticalAlignment="Top">
    <Label.Content>
        <MultiBinding StringFormat="{}{0} x {1}">
              <Binding Path="Width" />
              <Binding Path="Height" />
        </MultiBinding>
    </Label.Content>

宽度和高度是我的电影类的两个属性。我希望标签显示：“宽度 x 高度”例如。 800×640 然而标签控件仍然是空的。任何帮助表示赞赏。我想在不使用转换器的情况下执行此操作。

我通过使用 TextBlock 而不是 Label 修改了我的 xaml。但它仍然不会填充显示输出。

<TextBlock Height="28" HorizontalAlignment="Left" Margin="233,68,0,0" Name="label13" VerticalAlignment="Top">
                <TextBlock.Text>
                    <MultiBinding StringFormat="{}{0} x {1}">
                        <Binding Path="Width" />
                        <Binding Path="Height" />
                    </MultiBinding>
                </TextBlock.Text>
            </TextBlock>

原文

I'm trying to display a string in XAML using Label control. Following is my XAML code :

<Label Height="28" HorizontalAlignment="Left" Margin="233,68,0,0" Name="label13" VerticalAlignment="Top">
    <Label.Content>
        <MultiBinding StringFormat="{}{0} x {1}">
              <Binding Path="Width" />
              <Binding Path="Height" />
        </MultiBinding>
    </Label.Content>

Width and Height are two properties of my class Movie.
I want the label to display : "Width x Height" ex. 800 x 640
However the label control remains empty. Any help is appreciated.
I WANT TO DO THIS WITHOUT USING A CONVERTER.

I have modified my xaml by using a TextBlock instead of Label. But still it wont populate display the output.

<TextBlock Height="28" HorizontalAlignment="Left" Margin="233,68,0,0" Name="label13" VerticalAlignment="Top">
                <TextBlock.Text>
                    <MultiBinding StringFormat="{}{0} x {1}">
                        <Binding Path="Width" />
                        <Binding Path="Height" />
                    </MultiBinding>
                </TextBlock.Text>
            </TextBlock>

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各自安好 2024-12-26 14:31:06

您正在尝试将字符串绑定到对象。但 StringFormat 要求其目标是字符串类型。

尝试在标签内容中放入 TextBlock 并将数据绑定到它

<StackPanel>
  <Slider x:Name="sl1" Minimum="10" Maximum="100"/>
  <Slider x:Name="sl2" Minimum="10" Maximum="100"/>
  <Label x:Name="label13" Background="Yellow" Foreground="Black">
    <Label.Content>
        <TextBlock>
          <TextBlock.Text>
            <MultiBinding StringFormat="{}{0} x {1} Test">
              <Binding ElementName="sl1" Path="Value" />
              <Binding ElementName="sl2" Path="Value" />
            </MultiBinding>
          </TextBlock.Text>
        </TextBlock>
    </Label.Content>
  </Label>
</StackPanel>

编辑
您的类 Movie 必须实现 INotificationPropertyChanged 接口，并且您的两个属性必须使用其属性名称引发属性更改事件！

希望这有帮助

you are trying to bind a string to an object. But StringFormat requires its target to be a string type.

try putting a TextBlock in your label content and bind your data to it

<StackPanel>
  <Slider x:Name="sl1" Minimum="10" Maximum="100"/>
  <Slider x:Name="sl2" Minimum="10" Maximum="100"/>
  <Label x:Name="label13" Background="Yellow" Foreground="Black">
    <Label.Content>
        <TextBlock>
          <TextBlock.Text>
            <MultiBinding StringFormat="{}{0} x {1} Test">
              <Binding ElementName="sl1" Path="Value" />
              <Binding ElementName="sl2" Path="Value" />
            </MultiBinding>
          </TextBlock.Text>
        </TextBlock>
    </Label.Content>
  </Label>
</StackPanel>

EDIT
your class Movie must implement the INotificationPropertyChanged interface and your two properties must raise the property changed event with their proprty names!

hope this helps

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