如何获取我在listview中持有的项目

Question

我在win8中使用listview控件.我想在我按住项目时添加一个事件,然后删除该项目.

像这样的xaml和事件代码:

<ListView x:Name="ImageList" VerticalAlignment="Bottom" Background="LightGray" Width="1050" BorderBrush="Black" BorderThickness="2" Grid.Column="1" 
                      Holding="ListView_Hold1"  SelectionChanged="OnSelectedChanged" SelectionMode="Single" Height="152" ScrollViewer.HorizontalScrollBarVisibility="Auto" ItemContainerStyle="{StaticResource ListViewItemStyle1}" Style="{StaticResource ListViewStyle1}">
                <ListView.ItemTemplate>
                    <DataTemplate>
                            <Image Opacity="0.7" Width="150" Height="125" Stretch="UniformToFill" Source="{Binding}" />
                    </DataTemplate>
                </ListView.ItemTemplate>
                <ListView.ItemsPanel>
                    <ItemsPanelTemplate>
                        <VirtualizingStackPanel Orientation="Horizontal"/>
                    </ItemsPanelTemplate>
                </ListView.ItemsPanel>
            </ListView>


private async void ListView_Hold1(object sender, Windows.UI.Xaml.Input.HoldingRoutedEventArgs e)
    {...}

似乎我无法从holdingroutdEventArgs获取任何信息,而是来自originalsource的属性.但它是图像,无法访问iteml

我找到了一个相对的问题:"如何在listview中获取被点击的项目".它可以通过获取selecteditem的属性来解决.

有人可以帮帮我吗？给我一些线索.

Answer 1

HoldingRoutedEventArgs.OriginalSource.DataContext在你的情况下,你应该能够从中得到它:(假设它ListView.ItemSource是一个列表ImageModel)

private async void ListView_Hold1(object sender, Windows.UI.Xaml.Input.HoldingRoutedEventArgs args)
{
   var source = (FrameworkElement)args.OriginalSource;
   var imageModel = (ImageModel)source.DataContext;
}