如何在WPF XAML中的多绑定中使用stringformat [英] How to use stringformat in multibinding in WPF XAML

问题描述

您知道StringFormat对于WPF中的数据表示非常重要.我的问题是在WPF中进行多重绑定时如何使用StringFormat?

As you know StringFormat is of great importance for data representation in WPF. My problem is how to use StringFormat when multibinding in WPF?

如果我举一个非常简单的例子:

If I give a very simple example:

我们有变量A和B，其值分别为10.255555和25.6999999

We have variables,which are A and B and whose values are 10.255555 and 25.6999999

我们想向他们展示10.2,25.6?

如何通过多重绑定做到这一点?通常，这与ValueConverter无关紧要

How can I do this with multibinding? Normally it is piece of cake with ValueConverter

非常感谢您对此主题的任何帮助和想法

Any help and ideas on this topic will be greately appreciated

推荐答案

只需在MultiBinding上设置StringFormat属性；为多重绑定中的每个绑定使用占位符({0}，{1} ...)，并在必要时添加格式说明符(例如F1表示具有1个十进制数字的十进制数字)

Just set the StringFormat property on the MultiBinding; use placeholders ({0}, {1}...) for each binding in the multibinding, and include format specifiers if necessary (e.g. F1 for a decimal number with 1 decimal digit)

<TextBlock>
    <TextBlock.Text>
        <MultiBinding StringFormat="{}{0:F1}{1:F1}">
            <Binding Path="A" />
            <Binding Path="B" />
        </MultiBinding>
    </TextBlock.Text>
</TextBlock>

开头的{}部分是格式字符串，是转义序列(否则XAML解析器会认为{是标记扩展的开头)

The {} part at the beginning is the format string is an escape sequence (otherwise the XAML parser would consider { to be the beginning of a markup extension)

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