c# - 如何获取被点击的 ListView 项目

Question

我无法在 ListView 中获取点击的项目

主页.xaml

 <ListView 
                    ReorderMode="Disabled"
                    SelectionMode="Single"
                    IsItemClickEnabled="True"
                    ItemClick="Section_ItemClick"
                    ContinuumNavigationTransitionInfo.ExitElementContainer="True">

                    <ListViewItem Margin="0,0,0,10" Background="LightGray">
                        <StackPanel Orientation="Horizontal">
                            <Image Source="/Assets/Icons/1.png" Width="94" Height="94"/>
                            <TextBlock x:Uid="1" />
                        </StackPanel>
                    </ListViewItem>

                    ...
</ListView>

MainPage.xaml.cs

private async void Section_ItemClick(object sender, ItemClickEventArgs e)
    {
        ListViewItem itemId = ((sender as ListView).SelectedItem as ListViewItem);

        if (itemId != null)
        {
            .. do something ..
        }
        else
        {
            throw new Exception(this.resourceLoader.GetString("NavigationFailedExceptionMessage"));
        }
    }

编辑**

在进一步的测试中，我发现当事件触发时 sender 和 e 都为空？

Answer 1

好的，这终于解决了。使用 SelectionChanged 事件，并通过 x:Name

为每个 ListViewItem 分配一个名称

主页.xaml

<ListView 
                    x:Name="SettingsHub"
                    ReorderMode="Disabled"
                    SelectionChanged="SettingsHub_SelectionChanged"
                    ContinuumNavigationTransitionInfo.ExitElementContainer="True">
      ...
</ListView>

MainPage.xaml.cs

private void SettingsHub_SelectionChanged(object sender, SelectionChangedEventArgs e)
    {
        if (e.AddedItems.Count > 0)
        {
            var itemId = (e.AddedItems[0] as ListViewItem).Name;
        }            
    }