WPF DataGridTextColumn头绑定 [英] WPF DataGridTextColumn header binding

问题描述

我有一个code中，绑定不起作用。

I have a code in which Binding doesn't work

<DataGridTextColumn Header="{Binding LocalizedText.Task_Toolbar_AddButton}" />

有关按钮：

<Button x:Name="addTaskButton" Click="addTaskButton_Click">
<TextBlock Text="{Binding LocalizedText.Task_Toolbar_AddButton, Mode=OneWay}" />
</Button>

它工作正常，但对于DataGrid标题根本不工作。

it works fine, but for datagrid header doesn't work at all.

推荐答案

查找约什 - 史密斯的约DataContext的间谍，其中DataContextSpy类使用Hillberg的可冻结伎俩从一个对象，它是不是在一个逻辑树获得继承方面的博客。 DataContextSpy是很简单的，所以应该在许多情况下被重用。

Look up Josh Smith's blogs about DataContext Spy, where DataContextSpy class uses Hillberg’s Freezable trick to gain access to an inheritance context from an object that is not in a logical tree. DataContextSpy is very simple, so it should be reusable in many scenarios.

下面是如何使用它的头文件（我用这一切的时候，不仅DataGrid.Headers）：

Here's how you can use it on headers (I use it all the time, not only on DataGrid.Headers):

    <DataGrid...
    <DataGrid.Resources>
        <myNamespaces:DataContextSpy x:Key="dcSpy" DataContext="{LocalizedText}"/>
         .......

    <DataGridTemplateColumn Header="{Binding Source={StaticResource dcSpy}, Path=DataContext.Task_Toolbar_AddButton}">

编辑：
我似乎无法找到它在他的博客的任何地方，也许他归档，所以在这里，我只是将它加入你。贴吧，引用它在XAML正如我上面显示，然后用它的DataContext拉出你想要的数据绑定：

I can't seem to find it anywhere on his blog, maybe he archived it, so here, I'll just add it for you. Paste it, reference it in XAML as I showed above, then use it's DataContext to pull out what the data you want to bind:

public class DataContextSpy : Freezable
{
    public DataContextSpy ()
    {
        // This binding allows the spy to inherit a DataContext.
        BindingOperations.SetBinding (this, DataContextProperty, new Binding ());
    }

    public object DataContext
    {
        get { return GetValue (DataContextProperty); }
        set { SetValue (DataContextProperty, value); }
    }

    // Borrow the DataContext dependency property from FrameworkElement.
    public static readonly DependencyProperty DataContextProperty = FrameworkElement
        .DataContextProperty.AddOwner (typeof (DataContextSpy));

    protected override Freezable CreateInstanceCore ()
    {
        // We are required to override this abstract method.
        throw new NotImplementedException ();
    }
}

这篇关于WPF DataGridTextColumn头绑定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！