Question

如果我有一个ListBox并且它已绑定到MyObject.MyCollection，我怎样才能获得MyObject.MyValue？

<ListBox ItemsSource="{Binding Path=MyObject.MyCollection}">
  <ListBox.ItemTemplate>
    <DataTemplate>
      <StackPanel>
        <TextBlock Text="{Binding Path=Name}"/>
        <TextBlock Text="{Binding Path=MyObject.MyValue}"/>
      </StackPanel>
    </DataTemplate>
  </ListBox.ItemTemplate>
</ListBox>

public class MyObject {
   public ObservableCollection<CollectionThing> MyCollection {get; set;}
   public string MyValue {get; set;}
}

Answer 1

我认为你可以在绑定中使用相对来源

<ListBox ItemsSource="{Binding Path=MyObject.MyCollection}">
    <ListBox.ItemTemplate>
        <DataTemplate>
             <StackPanel>
                 <TextBlock Text="{Binding Path=Name}"/>
                 <TextBlock Text="{Binding Path=DataContext.MyObject.MyValue,
                                   RelativeSource={RelativeSource AncestorType=ListBox}}"/>
            </StackPanel>
        </DataTemplate>
    </ListBox.ItemTemplate>
</ListBox>

ListBox集合之外的绑定属性

1 个答案: