的StringFormat和Multibinding与标签 [英] StringFormat and Multibinding with Label

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问题描述

我想用的StringFormat来做些事情是这样的:

I would like to use StringFormat to do someting like this :

<Label x:Name="myLabel">
    <Label.Content>
        <Multibinding StringFormat="{}{0} - {1}">
            <Binding Path="Lib1" />
            <Binding Path="Lib2" />
        </MultiBinding>
    </Label.Content>
</Label>



然而,它不工作,我得到这个错误,而不是:

However, it's doesn't work and I got this error instead :

MultiBinding失败,因为它没有有效转换。 MultiBindingExpression:目标元素是标签(名称='myLabel');目标属性是内容(类型'对象')

MultiBinding failed because it has no valid Converter. MultiBindingExpression:target element is 'Label' (Name='myLabel'); target property is 'Content' (type 'Object')

有什么办法使这个代码工作的?

Is there any way to make this code work ?

推荐答案

您不能绑定这一点,因为你想一个字符串,它不会工作的对象绑定,因为需要的StringFormat它的目标是一个字符串类型。您可以使用一个TextBlock代替(其中有一个Text属性),或者把文本块作为标签的孩子解决这个问题有两种方法:

You cant bind this because you are trying to bind a string to an object which wont work because StringFormat requires its target to be a string type. You can get around this by either using a TextBlock instead (which has a Text property) or putting the Textblock as the child of the Label:

<Label x:Name="myLabel">
    <Label.Content>
        <TextBlock>
            <TextBlock.Text>
                <MultiBinding StringFormat="{}{0} - {1}">
                    <Binding Path="Lib1" />
                    <Binding Path="Lib2" />
                 </MultiBinding>
            </TextBlock.Text>
        </TextBlock>
    </Label.Content>
</Label>

这篇关于的StringFormat和Multibinding与标签的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!

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