C# wpf listview 右键问题
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wpf listview right-click problem
提问by KevinDeus
so I have attached a context menu (right-click menu) to a wpf listview.
所以我将上下文菜单（右键单击菜单）附加到 wpf 列表视图。
unfortunately, when you right-click it brings up both the menu and selectswhatever item you are over. Is there a way to shut off this right-click select behavior while still allowing the context menu?
不幸的是，当您右键单击时，它会同时显示菜单并选择您结束的任何项目。有没有办法在仍然允许上下文菜单的同时关闭此右键单击选择行为？
采纳答案by rmoore
The key is setting the PreviewMouseRightButtonDown event in the correct place. As you'll notice, even without a ContextMenu right clicking on a ListViewItem will select that item, and so we need to set the event on each item, not on the ListView.
关键是在正确的位置设置 PreviewMouseRightButtonDown 事件。您会注意到，即使没有 ContextMenu 右键单击 ListViewItem 也会选择该项目，因此我们需要在每个项目上设置事件，而不是在 ListView 上。
<ListView>
<ListView.ItemContainerStyle>
<Style TargetType="{x:Type ListViewItem}">
<EventSetter Event="PreviewMouseRightButtonDown"
Handler="OnListViewItemPreviewMouseRightButtonDown" />
</Style>
</ListView.ItemContainerStyle>
<ListView.ContextMenu>
<ContextMenu>
<MenuItem Header="Menu Item">Item 1</MenuItem>
<MenuItem Header="Menu Item">Item 2</MenuItem>
</ContextMenu>
</ListView.ContextMenu>
<ListViewItem>Item</ListViewItem>
<ListViewItem>Item</ListViewItem>
<ListViewItem>Item</ListViewItem>
<ListViewItem>Item</ListViewItem>
<ListViewItem>Item</ListViewItem>
<ListViewItem>Item</ListViewItem>
</ListView>
private void OnListViewItemPreviewMouseRightButtonDown(object sender, MouseButtonEventArgs e)
{
Trace.WriteLine("Preview MouseRightButtonDown");
e.Handled = true;
}
Since the preview events are tunnelingthis will block the RightMouseButtonDown from occurring on the ListViewItems preventing them from being selected, but not prevent the RightMouseButtonDown on the ListView and so still allow the ContextMenu to open.
由于预览事件是隧道，这将阻止 ListViewItems 上发生 RightMouseButtonDown，从而阻止它们被选择，但不会阻止 ListView 上的 RightMouseButtonDown，因此仍然允许打开 ContextMenu。
