从一个ListView其父冒泡滚动事件 [英] Bubbling scroll events from a ListView to its parent

问题描述

在我的WPF应用程序我有一个的ListView 的 ScrollViewer.VerticalScrollBarVisibility 设置为残疾人。它包含一个的ScrollViewer 之内。当我尝试通过的ListView 来使用鼠标滚轮，外的ScrollViewer 不滚动，因为的ListView 正在捕获滚动事件。

In my WPF application I have a ListView whose ScrollViewer.VerticalScrollBarVisibility is set to Disabled. It is contained within a ScrollViewer. When I attempt to use the mouse wheel over the ListView, the outer ScrollViewer does not scroll because the ListView is capturing the scroll events.

我怎么能强迫的ListView ，允许滚动事件冒泡到的ScrollViewer ？

How can I force the ListView to allow the scroll events to bubble up to the ScrollViewer?

推荐答案

您需要捕获preVIEW鼠标滚轮事件在内部列表视图

You need to capture the preview mouse wheel event in the inner listview

ctl.PreviewMouseWheel += PreviewMouseWheel;

然后从滚动列表视图停止活动，提高在父列表视图的事件。

then stop the event from scrolling the listview and raise the event in the parent listview.

private static void PreviewMouseWheel(object sender, MouseWheelEventArgs e)
{
    if (!e.Handled)
    {
        e.Handled = true;
        var eventArg = new MouseWheelEventArgs(e.MouseDevice, e.Timestamp, e.Delta);
        eventArg.RoutedEvent = UIElement.MouseWheelEvent;
        eventArg.Source = sender;
        var parent = ((Control)sender).Parent as UIElement;
        parent.RaiseEvent(eventArg);
    }
}

Creds去@罗伯特 - 瓦格纳谁在几个月前解决了这个给我。

Creds go to @robert-wagner who solved this for me a few months ago.

这篇关于从一个ListView其父冒泡滚动事件的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！