在 ListView 上用鼠标激活水平滚动 [英] Activate horizontal scrolling with mouse on ListView

问题描述

我有一个自定义的水平 ListView，它的模板中带有自定义的 ScrollViewer(使用 Blend 创建).我希望它在使用鼠标滚轮时水平滚动.我该怎么做?

I've got a custom horizontal ListView with custom ScrollViewer inside it's template (created with Blend). I want it to scroll horizontally when using mouse scrolling wheel. How can I do that?

推荐答案

如果你实现了 IScrollInfo 你可以覆盖 MouseWheelUp 来做 MouseWheelLeft并以相同的方式向下向右

if you implement IScrollInfo you can override the MouseWheelUp to do MouseWheelLeft and down ight the in same way

编辑(更简单):

添加到您的 ScrollViewer PreviewMouseWheel

add to your ScrollViewer PreviewMouseWheel

private void ScrollViewer_PreviewMouseWheel(object sender, MouseWheelEventArgs e)
        {
            if (e.Delta < 0) // wheel down
            {
                if (myScrollViewer.HorizontalOffset + e.Delta > 0)
                {
                    myScrollViewer.ScrollToHorizontalOffset(myScrollViewer.HorizontalOffset + e.Delta);  
                }
                else
                {
                    myScrollViewer.ScrollToLeftEnd();
                }
            }
            else //wheel up
            {
                if (myScrollViewer.ExtentWidth > myScrollViewer.HorizontalOffset + e.Delta)
                {
                    myScrollViewer.ScrollToHorizontalOffset(myScrollViewer.HorizontalOffset + e.Delta);  
                }
                else
                {
                    myScrollViewer.ScrollToRightEnd();
                }
            }

        }

xml:

<ScrollViewer x:Name="myScrollViewer" HorizontalScrollBarVisibility="Visible" Mouse.PreviewMouseWheel="ScrollViewer_PreviewMouseWheel"> 

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