什么是的String.Format的WPF XAML数据绑定相当于？ [英] What is the WPF XAML Data Binding equivalent of String.Format?

问题描述

或者，更清楚，我怎么可以格式化文本块（在我的情况，被列入工具提示中），使得文本的某些部分来自绑定的值。

Or, to be more clear, how can I format a block of text (in my case, to be included within a tooltip) such that some portions of the text come from bound values.

在普通的C＃我会用：

_toolTip.Text = string.Format("{1:#0}% up, {2:#0}% down",
    Environment.NewLine, percentageOne, percentage2);

然而，WPF XAML标记的Text属性似乎只能够包含一个单一的结合。大括号给了我很高的期望，但这是不可能的：

However the WPF XAML markup for a Text property seems able to contain only a single binding. The curly braces gave me high hopes, but this isn't possible:

<Element>
  <Element.Tooltip>
    <!-- This won't compile -->
    <TextBlock Text="{Binding Path=PercentageOne}% up, {Binding Path=PercentageTwo}% down"/>
  </Element.Tooltip>
</Element>

我读了 Run.Text 属性不是依赖财产，因此不被束缚。

I read that the Run.Text property is not a dependency property and can therefore not be bound.

有没有一种方法可以让我完成这个格式在XAML？

Is there a way I can perform this formatting in XAML?

推荐答案

您可以使用MultiBinding +的StringFormat（需要WPF 3.5 SP1）：

You can use MultiBinding + StringFormat (requires WPF 3.5 SP1):

<TextBox.Text>
    <MultiBinding StringFormat="{}{1:#0}% up, {2:#0}% down">
      <Binding Path="PercentageOne" />
      <Binding Path="PercentageTwo"/>
    </MultiBinding>
</TextBox.Text>

对于Run.Text - 你不能绑定到它，但也有一些解决方法：

Regarding Run.Text - you can't bind to it but there are some workarounds:

• http://fortes.com/2007/03/20/bindablerun/
• <一个href="http://paulstovell.net/blog/index.php/attached-bindablerun/">http://paulstovell.net/blog/index.php/attached-bindablerun/

• http://fortes.com/2007/03/20/bindablerun/
• http://paulstovell.net/blog/index.php/attached-bindablerun/

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