如何启用鼠标水平滚动？

我无法确定如何使用鼠标滚轮水平滚动。垂直滚动可以自动很好地工作，但我需要水平滚动我的内容。我的代码如下所示：

<ListBox x:Name="receiptList"
         Margin="5,0"
         Grid.Row="1"
         ItemTemplate="{StaticResource receiptListItemDataTemplate}"
         ItemsSource="{Binding OpenReceipts}"
         ScrollViewer.VerticalScrollBarVisibility="Disabled">
    <ItemsControl.ItemsPanel>
        <ItemsPanelTemplate>
            <StackPanel Orientation="Horizontal"
                        ScrollViewer.HorizontalScrollBarVisibility="Visible"/>
        </ItemsPanelTemplate>
    </ItemsControl.ItemsPanel>
</ListBox>

我的项目模板如下所示：

<DataTemplate x:Key="receiptListItemDataTemplate">
    <RadioButton GroupName="Numbers"
                 Command="{Binding Path=DataContext.SelectReceiptCommand,RelativeSource={RelativeSource FindAncestor,AncestorType={x:Type POS:PointOfSaleControl}}}"
                 CommandParameter="{Binding }"
                 Margin="2,0"
                 IsChecked="{Binding IsSelected}">
        <RadioButton.Template>
            <ControlTemplate TargetType="{x:Type RadioButton}" >
                <Grid x:Name="receiptGrid" >
                    <Grid>
                        <Border BorderThickness="2" 
                                BorderBrush="Green" 
                                Height="20" 
                                Width="20">
                            <Grid x:Name="radioButtonGrid" 
                                  Background="DarkOrange">
                                <TextBlock x:Name="receiptLabel"
                                           HorizontalAlignment="Center"
                                           VerticalAlignment="Center"
                                           Text="{Binding Path=NumberInQueue, Mode=OneWay}"
                                           FontWeight="Bold"
                                           FontSize="12"
                                           Foreground="White">
                                </TextBlock>
                            </Grid>
                        </Border>
                    </Grid>
                </Grid>

                <ControlTemplate.Triggers>
                    <Trigger Property="IsChecked" Value="True">
                        <Setter Property="Margin" 
                                TargetName="receiptGrid" 
                                Value="2,2,-1,-1"/>
                        <Setter Property="Background"
                                TargetName="radioButtonGrid" 
                                Value="Maroon"/>
                    </Trigger>
                </ControlTemplate.Triggers>
            </ControlTemplate>
        </RadioButton.Template>
    </RadioButton>          
</DataTemplate>

我是否需要添加其他方法或控件才能获得该功能？

这是一个完整的行为。将以下类添加到您的代码中，然后在您的 XAML 中将任何附加属性设置为 trueUIElement其中包含一个ScrollViewer作为一个视觉儿童。

<MyVisual ScrollViewerHelper.ShiftWheelScrollsHorizontally="True" />

班上：

public static class ScrollViewerHelper
{
    public static readonly DependencyProperty ShiftWheelScrollsHorizontallyProperty
        = DependencyProperty.RegisterAttached("ShiftWheelScrollsHorizontally",
            typeof(bool),
            typeof(ScrollViewerHelper),
            new PropertyMetadata(false, UseHorizontalScrollingChangedCallback));

    private static void UseHorizontalScrollingChangedCallback(DependencyObject d, DependencyPropertyChangedEventArgs e)
    {
        var element = d as UIElement;

        if (element == null)
            throw new Exception("Attached property must be used with UIElement.");

        if ((bool)e.NewValue)
            element.PreviewMouseWheel += OnPreviewMouseWheel;
        else
            element.PreviewMouseWheel -= OnPreviewMouseWheel;
    }

    private static void OnPreviewMouseWheel(object sender, MouseWheelEventArgs args)
    {
        var scrollViewer = ((UIElement)sender).FindDescendant<ScrollViewer>();

        if (scrollViewer == null)
            return;

        if (Keyboard.Modifiers != ModifierKeys.Shift)
            return;

        if (args.Delta < 0)
            scrollViewer.LineRight();
        else
            scrollViewer.LineLeft();

        args.Handled = true;
    }

    public static void SetShiftWheelScrollsHorizontally(UIElement element, bool value) => element.SetValue(ShiftWheelScrollsHorizontallyProperty, value);
    public static bool GetShiftWheelScrollsHorizontally(UIElement element) => (bool)element.GetValue(ShiftWheelScrollsHorizontallyProperty);

    [CanBeNull]
    private static T FindDescendant<T>([CanBeNull] this DependencyObject d) where T : DependencyObject
    {
        if (d == null)
            return null;

        var childCount = VisualTreeHelper.GetChildrenCount(d);

        for (var i = 0; i < childCount; i++)
        {
            var child = VisualTreeHelper.GetChild(d, i);

            var result = child as T ?? FindDescendant<T>(child);

            if (result != null)
                return result;
        }

        return null;
    }
}

这个答案修复了一些错误约翰内斯的回答 https://stackoverflow.com/a/26143987/24874，例如不通过 Shift 键进行过滤、同时水平和垂直滚动（运动为对角线）以及无法通过将属性设置为 false 来禁用该行为。