小编Ric*_*h S的帖子

我有一个带NavigationView控件的UWP应用程序.通过MenuItemsSource在XAML中设置类型对象的集合来创建导航项NavigationViewElement.

<NavigationView 
        Style="{StaticResource MainPageNavControlStyle}" 
        HeaderTemplate="{StaticResource MainPageNavHeaderTemplate}"
        MenuItemsSource="{Binding NavigationViewElements}"
        MenuItemContainerStyleSelector="{StaticResource NavStyleSelector}"
        MenuItemTemplateSelector="{StaticResource NavItemTemplateSelector}"
        x:Name="NavigationViewControl" 
        CompactModeThresholdWidth="480" 
        ExpandedModeThresholdWidth="635" 
        OpenPaneLength="324"
        Loaded="OnControlLoaded"
        ItemInvoked="OnItemInvoked"
        IsTabStop="False"
        IsSettingsVisible="False"
>

我想绑定IsEnabled的属性NavigationViewItems是那些获得创建一个属性NavigationViewElement.我怎么能这样做？

我有一个类似的问题ListBox.在这种情况下,我能够从ListBox派生一个新类,它覆盖PrepareContainerForItemOverride()并设置基于绑定到的类中的数据的IsEnabled标志ListBoxItem(在本例中为OptionItem)

protected override void PrepareContainerForItemOverride(Windows.UI.Xaml.DependencyObject element, object item)
{
    ListBoxItem lItem = element as ListBoxItem;
    OptionItem oItem = item as OptionItem;

    if (lItem != null && oItem != null)
    {
        lItem.IsEnabled = oItem.IsEnabled;
    }
    base.PrepareContainerForItemOverride(element, item);
}

是否有一个等价的 …