ListViewItem的IsSelected绑定 - Works的WPF，但不适合的WinRT(

我想一个一个ListViewItem的IsSelected属性绑定到一个ViewModel的属性。 它工作正常，在WPF，但在Windows RT IsSelected属性永远不会得到设定。

public class Item : INotifyPropertyChanged
{
    private readonly string name;
    private bool isSelected;
    public event PropertyChangedEventHandler PropertyChanged;

    public bool IsSelected
    {
        get { return isSelected; }
        set { isSelected = value; RaisePropertyChanged("IsSelected"); }
    }

    public string Name { get { return name; } }

    public Item(string name)
    {
        this.name = name;
    }

    protected void RaisePropertyChanged(string propertyName)
    {
        var handler = PropertyChanged;
        if (handler != null)
            handler.Invoke(this, new PropertyChangedEventArgs(propertyName));
    }
}

public class ViewModel
{
    private readonly ObservableCollection<Item> items = new ObservableCollection<Item>(Enumerable.Range(0, 10).Select(p => new Item(p.ToString())));
    public ObservableCollection<Item> Items { get { return items; } }
}

public sealed partial class MainPage : Page
{
    public MainPage()
    {
        this.InitializeComponent();
        DataContext = new ViewModel();
    }
}

XAML：

<StackPanel Orientation="Horizontal">
    <ListView ItemsSource="{Binding Path=Items}" SelectionMode="Multiple">
        <ListView.ItemContainerStyle>
            <Style TargetType="ListViewItem">
                <Setter Property="IsSelected" Value="{Binding Path=IsSelected, Mode=TwoWay}"/>
            </Style>
        </ListView.ItemContainerStyle>
    </ListView>
    <ListView.ItemTemplate>
        <DataTemplate>
            <TextBlock Text="{Binding Path=Name}"/>
         </DataTemplate>
     </ListView.ItemTemplate>
</StackPanel>

我能点击屏幕上的项目，但IsSelected属性没有传播到视图模型。 任何想法，为什么？

Answer 1:

WinRT的不支持制定者绑定在所有与Windows 8.0。 秉的解决方法。

Answer 2:

做一个很好的和简单的方法是继承的ListView

public class MyListView : ListView
    {
        protected override void PrepareContainerForItemOverride(Windows.UI.Xaml.DependencyObject element, object item)
        {
            base.PrepareContainerForItemOverride(element, item);
            // ...
            ListViewItem listItem = element as ListViewItem;
            Binding binding = new Binding();
            binding.Mode = BindingMode.TwoWay;
            binding.Source = item;
            binding.Path = new PropertyPath("Selected");
            listItem.SetBinding(ListViewItem.IsSelectedProperty, binding);
        }
    }

另外 ，似乎你也可以做到这一点的WinRT XAML工具包 。

<ListView
            x:Name="lv"
            Grid.Row="1"
            Grid.Column="1"
            SelectionMode="Multiple"
            HorizontalAlignment="Left"
            Width="500">
            <ListView.ItemTemplate>
                <DataTemplate>
                    <TextBlock
                        Extensions:ListViewItemExtensions.IsSelected="{Binding IsSelected}"
                        Extensions:ListViewItemExtensions.IsEnabled="{Binding IsEnabled}"
                        Text="{Binding Text}"
                        Margin="15,5"
                        FontSize="36" />
                </DataTemplate>
            </ListView.ItemTemplate>
        </ListView>

就个人而言，我用第一种方法，因为它更灵活，我需要绑定一些自动化属性。

学分ForInfo和ehuna： http://social.msdn.microsoft.com/Forums/windowsapps/en-US/9a0adf35-fdad-4419-9a34-a9dac052a2e3/listviewitemisselected-data-binding-in-style-setter-is-未工作

文章来源: ListViewItem IsSelected Binding - Works for WPF, but not for WinRT