c# - 通过按钮在 ListView 中进行单选

Question

目标:
需要在 ListView 中选择单行包含按钮。

问题:
当您单击位于 ListView 内部的按钮时，不知道如何在 ListView 中进行单个选择。在一个简单的解释中，当点击按钮时，不会在 ListView 的行中应用任何选择

如果在进入按钮的方法之前应用选择会很棒，因为我需要从应该发送到业务逻辑的 ListView 的单个选择中获取信息。

---

private void btnBuy_Click(object sender, RoutedEventArgs e)
{

}

<ListView Height="242.47" Canvas.Left="8" Canvas.Top="49.53" Width="435.22" Name="lstOrder" ItemsSource="{Binding}"
        PreviewMouseLeftButtonUp="lstOrder_PreviewMouseLeftButtonUp" SelectionChanged="lstOrder_SelectionChanged"
        SelectionMode="Single">
    <ListView.View>
        <GridView>
            <GridViewColumn Header="Article Number" Width="auto" DisplayMemberBinding="{Binding Path=_articleNumber}"
                    TextBlock.TextAlignment="Left"
                    HeaderContainerStyle="{StaticResource ListViewHeaderRightAlignedStyle}" />
            <GridViewColumn Header="Name" Width="auto" DisplayMemberBinding="{Binding Path=_name}"
                    TextBlock.TextAlignment="Left"
                    HeaderContainerStyle="{StaticResource ListViewHeaderRightAlignedStyle}" />
            <GridViewColumn Header="Sale Price" Width="auto" DisplayMemberBinding="{Binding Path=_salePrice}"
                    TextBlock.TextAlignment="Left"
                    HeaderContainerStyle="{StaticResource ListViewHeaderRightAlignedStyle}" />
            <GridViewColumn Header="Product Category" Width="auto"
                    DisplayMemberBinding="{Binding Path=_productCategory}" TextBlock.TextAlignment="Left"
                    HeaderContainerStyle="{StaticResource ListViewHeaderRightAlignedStyle}" />
            <GridViewColumn Header="Quantity" Width="auto" DisplayMemberBinding="{Binding Path=_quantity}"
                    TextBlock.TextAlignment="Left"
                    HeaderContainerStyle="{StaticResource ListViewHeaderRightAlignedStyle}" />
            <GridViewColumn>
                <GridViewColumn.CellTemplate>
                    <DataTemplate>
                        <Button Name="btnBuy" MinHeight="20" MinWidth="50" Content="Buy" Click="btnBuy_Click" />
                    </DataTemplate>
                </GridViewColumn.CellTemplate>
            </GridViewColumn>
        </GridView>
    </ListView.View>
</ListView>

---

namespace MediaStore
{
    /// <summary>
    /// Interaction logic for Counter.xaml
    /// </summary>
    public partial class Counter : Window
    {
        private ManagerProduct _myManagerProduct;
        private ManagerCart _myManagerCart;

    public Counter(ManagerProduct pManagerProduct, ManagerCart pMyManagerCart)
    {
        this.InitializeComponent();

        _myManagerProduct = pManagerProduct;
        _myManagerCart = pMyManagerCart;


        lstOrder.AddHandler(ListViewItem.UnselectedEvent, new RoutedEventHandler(ItemSelected), true);


        UpDateGUI();
    }


    public void UpDateGUI()
    {
        FillDataInListView();
    }

    private void FillDataInListView()
    {
        lstOrder.DataContext = _myManagerProduct.GetAllProductList();
    }

    #region Tab Order - 1. Order

    private void btnBuy_Click(object sender, RoutedEventArgs e)
    {

    }

    private void btnDisplayCart_Click(object sender, RoutedEventArgs e)
    {

    }

    private void btnCheckout_Click(object sender, RoutedEventArgs e)
    {
        cvsOrder.Visibility = Visibility.Hidden;

        cvsConfirmation.Margin = new Thickness(8, 8, 8, 17);
    }

    private void lstOrder_PreviewMouseLeftButtonUp(object sender, MouseButtonEventArgs e)
    {


    }


    private void ItemSelected(object sender, RoutedEventArgs e)
    {

    }


    private void lstOrder_SelectionChanged(object sender, SelectionChangedEventArgs e)
    {

    }
    #endregion

    }

}

Answer 1

您不需要选择 ListViewItem，您可以从 Button 的 DataContext 中获取数据对象，并且不需要其他行的数据，因为您无论如何想要一个单一的选择。

在事件处理程序中:

var data = (sender as FrameworkElement).DataContext as MyData;

(顺便说一句，话虽如此，您是否需要选择？如果不使用 ItemsControl)

要使 ListViewItem 在单击按钮时选择自身，您可以使用 ItemContainerStyle，如下所示:

<ListView.ItemContainerStyle>
    <Style TargetType="{x:Type ListViewItem}">
        <Setter Property="IsSelected"
                Value="{Binding RelativeSource={RelativeSource Self}, Path=IsKeyboardFocusWithin, Mode=OneWay}" />
    </Style>
</ListView.ItemContainerStyle>

这是一个使用动画的替代方法，它在 ListView 失去焦点后保留所选项目(仅适用于 ListView.SelectionMode 为 Single因为似乎无法使用动画清除先前的选择):

<Style TargetType="{x:Type ListViewItem}">
    <Style.Triggers>
        <DataTrigger
                Binding="{Binding RelativeSource={RelativeSource Self}, Path=IsKeyboardFocusWithin, Mode=OneWay}"
                Value="True">
            <DataTrigger.EnterActions>
                <BeginStoryboard>
                    <Storyboard>
                        <BooleanAnimationUsingKeyFrames Storyboard.TargetProperty="IsSelected">
                            <DiscreteBooleanKeyFrame KeyTime="0" Value="True" />
                        </BooleanAnimationUsingKeyFrames>
                    </Storyboard>
                </BeginStoryboard>
            </DataTrigger.EnterActions>
        </DataTrigger>
    </Style.Triggers>
</Style>