将 DataGrid 列标题绑定到 DataContext [英] Binding DataGrid column Header to DataContext

问题描述

我知道以前有人问过这个问题，但以前"的答案似乎都不适合我......

I know this question has been asked before, but none of the "previous" answers seems to work for me...

我在我的应用程序中实现了多语言功能，因此我必须将我的 DataGrid 列的标题绑定到 DataContext.

I have implemented a functionality for multi languages in my application, and I therefor have to bind the header of my DataGrid columns to the DataContext.

我在 DataContext 中使用字典(在下面的示例中称为 Text)来存储文本，并且该绑定适用于文本块、按钮等.

I use a dictionary (called Text in the example below) in the DataContext to store the texts, and the binding works fine with textblocks, buttons etc.

<TextBlock Text="{Binding Text[Name], FallbackValue='Name'" />

但是，我无法在 DataGrid 列的 Header 属性上使用它.

But, I can't get this to work on the Header-attribute of the DataGrid columns.

我在某处读到，我需要为列/标题编写一个模板来实现这一点，但我也想不通.

I read somewhere, that I need to write a template for the column/header to achieve this, but I can't figure this out either.

推荐答案

您可能需要返回树来获取所需的 DataContext:

You may need to walk back up the tree to get the DataContext you want:

<DataGridTextColumn Binding="{Binding Name}">
    <DataGridTextColumn.HeaderTemplate>
        <DataTemplate>
            <TextBlock Text="{Binding DataContext.Text[Name],
                       RelativeSource={RelativeSource AncestorType=DataGrid}}"/>
        </DataTemplate>
    </DataGridTextColumn.HeaderTemplate>
</DataGridTextColumn>

直接在 Header 属性上执行此操作将不起作用，因为它无法就地解析，因为列是未出现在树中的抽象对象.

Doing this directly on the Header property will not work because it cannot be resolved in-place as the column is an abstract object not appearing in the tree.

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