当 ListView 获得焦点时,您可以像这样将 Behavior 附加到 Listview:
(System.Windows.Interactivity
需要引用)Xaml:
<ListView SelectionMode="Multiple">
<ListViewItem>A Company 1</ListViewItem>
<ListViewItem>A Company 2</ListViewItem>
<ListViewItem>A Company 3</ListViewItem>
<ListViewItem>B Company 1</ListViewItem>
<ListViewItem>B Company 2</ListViewItem>
<ListViewItem>C Company 1</ListViewItem>
<ListViewItem>C Company 2</ListViewItem>
<ListViewItem>C Company 3</ListViewItem>
<ListViewItem>D Company 1</ListViewItem>
<ListViewItem>D Company 2</ListViewItem>
<ListViewItem>E Company 1</ListViewItem>
<ListViewItem>F Company 1</ListViewItem>
<i:Interaction.Behaviors>
<ListBoxHighlighting:ListViewBehavior />
</i:Interaction.Behaviors>
</ListView>
行为:
public class ListViewBehavior : Behavior<ListView>
{
protected override void OnAttached()
{
AssociatedObject.KeyDown += OnKeyDown;
}
protected override void OnDetaching()
{
AssociatedObject.KeyDown -= OnKeyDown;
}
private void OnKeyDown(object sender, KeyEventArgs e)
{
var key = e.Key.ToString();
AssociatedObject.SelectedItems.Clear();
foreach (var item in AssociatedObject.Items)
{
var i = (item as ListViewItem).Content;
if(i.ToString().StartsWith(key))
{
AssociatedObject.SelectedItems.Add(item);
}
}
}
}