WPF-带有内容的边框模板 [英] WPF - Border template with content

问题描述

假设我具有以下控制模板：

Let's assume I have the following control template:

<ControlTemplate x:Key="Test">
    <Grid>
        <Border BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="1" Width="33" Height="33" CornerRadius="3"/>
        <ContentControl Content="{TemplateBinding Property=ContentControl.Content}" VerticalAlignment="Center" HorizontalAlignment="Center"/>
    </Grid>
</ControlTemplate>

如何在wpf中更改控件的内容？我已经尝试过类似

How can I change content of the control in wpf? I've tried something like

<Control Template="{StaticResource Test}" BorderBrush="Black" Content="aa"></Control>

但是当我这样做时，它说我无法识别或找不到属性内容。

But when I do so I it says me that the property content is not recognized or it is not found.

推荐答案

您需要自行使用 ContentControl 您想要...要清楚一点， ContentControl 元素与 Control 元素无关。它用于显示数据对象，还可以选择将 DataTemplate 应用于该对象。 DataTemplate 是您可以自定义的部分：

You need to use the ContentControl on its own to do what you want... to be clear, a ContentControl element has nothing to do with a Control element. It is used to display a data object and optionally apply a DataTemplate to the object. The DataTemplate is that part that you can customise:

<ContentControl Content="{Binding SomeDataObject}" 
    ContentTemplate="{StaticResource SomeDataObjectTemplate}" />

...

在某些资源集合：

<DataTemplate x:Key="SomeDataObjectTemplate" DataType="{x:Type Prefix:SomeDataObject}">
    <Grid>
        <Border BorderBrush="Black" BorderThickness="1" CornerRadius="3" />
        <TextBlock Text="{Binding}" />
    </Grid>
</DataTemplate>

您唯一的其他选择是声明 UserControl 并将标记的某些部分显示为 DependencyProperty s，您可以从控件外部将数据绑定到这些内容：

Your only other alternative is to declare a UserControl and expose certain parts of the markup as DependencyPropertys that you can data bind to from outside the control:

<Prefix:YourUserControl CustomContent="{Binding SomeDataObject}" />

在控件内部：

<ContentControl Content="{Binding CustomContent, 
    RelativeSource={RelativeSource AncestorType={x:Type Local:YourUserControl }}}" />

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