Wpf 样式：通过 ElementName 绑定到子属性
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Wpf Style: Binding to Child Property via ElementName
提问by makim
I have an Application that gives me the Option to change the Application-Theme via a RessourceDictionary, meaning I can only use pure XAML.
我有一个应用程序，它为我提供了通过 RessourceDictionary 更改应用程序主题的选项，这意味着我只能使用纯 XAML。
Now, what I want to do is hide a DockPanel, that does not have an ElementName, but it has a Child with an x:Name Property.
现在，我想要做的是隐藏一个 DockPanel，它没有 ElementName，但它有一个带有 x:Name 属性的 Child。
<Style TargetType="DockPanel">
<Setter Property="Visibility" Value="{Binding RelativeSource={RelativeSource Self}, Path=Child.Visibility}"/>
</Style>
With this Code I′m getting the first Child of the DockPanel, but I want to bind the value to the specific Child which has a unique ElementName.
使用此代码，我将获得 DockPanel 的第一个 Child，但我想将该值绑定到具有唯一 ElementName 的特定 Child。
So not every DockPanel disappears, only the one that has a Child of Type e.g. "TextBox" with an Elementname of "MyTextBox".
因此，并非每个 DockPanel 都会消失，只有具有子类型的 DockPanel，例如“TextBox”，元素名称为“MyTextBox”。
Anybody has an Idea how to do that? Thanks ;-)
任何人都有一个想法如何做到这一点？谢谢 ;-）
回答by makim
Got it working the DockPanel has a Border as Parent and with this Code I can set the Visibility of this Border to Hidden!
让它工作 DockPanel 有一个边框作为父级，使用此代码我可以将此边框的可见性设置为隐藏！
<Style TargetType="Border">
<Style.Triggers>
<DataTrigger Binding="{Binding RelativeSource={RelativeSource Self}, Path=Child.Children[2].Name}"
Value="SearchTextBox">
<Setter Property="Visibility" Value="Hidden"/>
</DataTrigger>
</Style.Triggers>
</Style>
Possible improvement: Do not reference the TextBox per Index, iterate through childs...
可能的改进：不要引用每个索引的 TextBox，遍历 childs...
