获得第一个可见项目在WPF的ListView C＃ [英] Get First Visible Item in WPF ListView C#

问题描述

任何人都知道如何在ListView抓住了第一个可见项目获得ListViewItem的？我知道如何在索引0获得该项目，但不是第一个可见。

Anyone know how to get a ListViewItem by grabbing the first visible item in the ListView? I know how to get the item at index 0, but not the first visible one.

推荐答案

这是如此的痛苦得到工作：

This was so painful to get working:

HitTestResult hitTest = VisualTreeHelper.HitTest(SoundListView, new Point(5, 5));
System.Windows.Controls.ListViewItem item = GetListViewItemFromEvent(null, hitTest.VisualHit) as System.Windows.Controls.ListViewItem;

和功能来获取列表项：

System.Windows.Controls.ListViewItem GetListViewItemFromEvent(object sender, object originalSource)
    {
        DependencyObject depObj = originalSource as DependencyObject;
        if (depObj != null)
        {
            // go up the visual hierarchy until we find the list view item the click came from  
            // the click might have been on the grid or column headers so we need to cater for this  
            DependencyObject current = depObj;
            while (current != null && current != SoundListView)
            {
                System.Windows.Controls.ListViewItem ListViewItem = current as System.Windows.Controls.ListViewItem;
                if (ListViewItem != null)
                {
                    return ListViewItem;
                }
                current = VisualTreeHelper.GetParent(current);
            }
        }

        return null;
    }

这篇关于获得第一个可见项目在WPF的ListView C＃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！