的Windows Phone 8.1 XAML的StringFormat [英] Windows Phone 8.1 XAML StringFormat

问题描述

我试图显示与绑定数据一起一些文本，比如，我的代码：

I am trying to display some text along with binded data, for example, I have the code:

<TextBlock Text="{Binding Shorthand}"  Style="{ThemeResource ListViewItemTextBlockStyle}" />

我想之前速记添加一些文字，从我读这将有可能通过使用的StringFormat为一体的结合，东西线沿线的一个属性：

I want to add some text before 'Shorthand', from what I have read this would be possible by using StringFormat as a property of the Binding, something along the lines of:

<TextBlock Text="{Binding Path=Shorthand, StringFormat={0} text I want to add}"  Style="{ThemeResource ListViewItemTextBlockStyle}" />

不过，这似乎并没有工作，这是不再做的事情在8.1的方式吗？

However this doesn't seem to work, is this no longer the way to do things in 8.1?

推荐答案

的StringFormat 不支持WinRT的。但是，你可以很容易地创建一个自定义转换器替换：

StringFormat isn't supported on WinRT. However, you can easily replace it by creating a custom converter:

public class StringFormatConverter : IValueConverter
{
    public object Convert(object value, Type targetType, object parameter, string language)
    {
        return string.Format(parameter as string, value);
    }  

    public object ConvertBack(object value, Type targetType, object parameter, string language)
    {
        return null;
    }
}

然后在你的页面资源，声明它：

Then declare it in your page resources:

<Page.Resources>
    <local:StringFormatConverter x:Name="StringFormat"/>
</Page.Resources>

而在你的绑定使用它：

And use it in your bindings:

<TextBlock Text="{Binding Path=SomeText, Converter={StaticResource ResourceKey=StringFormat}, ConverterParameter='Hello {0}'}" />

这篇关于的Windows Phone 8.1 XAML的StringFormat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！