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.
在您的情况下,您应该能够从HoldingRoutedEventArgs.OriginalSource.DataContext中获取它:(假设ListView.ItemSource是ImageModel的列表)
- private async void ListView_Hold1(object sender,Windows.UI.Xaml.Input.HoldingRoutedEventArgs args)
- {
- var source = (FrameworkElement)args.OriginalSource;
- var imageModel = (ImageModel)source.DataContext;
- }
