XAML从ItemsControl模板绑定 [英] XAML Binding from ItemsControl Template

问题描述

我有一个ViewModel设置为DataContext的视图。那个ViewModel有一个布尔属性，称之为IsInEditMode。如何从DataTemplate中的UserControl绑定（标记为Binding IsInEditMode）到外部的ViewModel？

  ; ItemsControl ItemTemplate ={StaticResource HomeItemTemplate}> 
< ItemsControl.Resources> 
< DataTemplate x：Key =HomeItemTemplate> 
< utils：PersonTextBox Property ={Binding IsInEditMode}/> 
< / DataTemplate> 
< /ItemsControl.Resources> 
< / ItemsControl> 
  

解决方案

您可以使用 RelativeSource 绑定到外部ItemsControl，然后绑定到其数据上下文：

 < utils ：PersonTextBox Property ={Binding 
 RelativeSource = {RelativeSource AncestorType = ItemsControl}，
 Path = DataContext.IsInEditMode}/> 
  

I have a view that has a ViewModel set as DataContext. That ViewModel has a boolean Property, call it "IsInEditMode". How do I bind from the UserControl in the DataTemplate (marked as "Binding IsInEditMode") to the ViewModel on the outside?

<ItemsControl ItemTemplate="{StaticResource HomeItemTemplate}">
    <ItemsControl.Resources>
        <DataTemplate x:Key="HomeItemTemplate">
            <utils:PersonTextBox Property="{Binding IsInEditMode}"/>
        </DataTemplate>
    </ItemsControl.Resources>
</ItemsControl>

解决方案

You can use a RelativeSource binding to get to the outer ItemsControl, and then bind to its data context:

<utils:PersonTextBox Property="{Binding 
    RelativeSource={RelativeSource AncestorType=ItemsControl},
    Path=DataContext.IsInEditMode}"/>

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