WPF:当 TextBox 具有焦点时为 ListBox 设置 IsSelected，而不会丢失 LostFocus 上的选择

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我有一个带有 ListBoxItems 和模板的 ListBox，因此它们包含 TextBoxes

I've a ListBox with ListBoxItems with a template so they contain TextBoxes

当 TextBox 获得焦点时，我希望选择 ListBoxItem.我发现的一种解决方案如下所示:

When the TextBox gets focused I want the ListBoxItem to be selected. One solution I've found looks like this:

<Style TargetType="{x:Type ListBoxItem}"> <Style.Triggers> <Trigger Property="IsKeyboardFocusWithin" Value="True"> <Setter Property="IsSelected" Value="True"></Setter> </Trigger> </Style.Triggers> </Style>

这很好用，但是当 TextBox 失去焦点时，选择也会失去焦点.

This works great, but when the TextBox loses focus so does the selection.

有没有办法防止这种情况发生?

Is there a way to prevent this from happening?

推荐答案

我发现的最好的解决方案是:

Best solution I've found to do this with no code behinde is this:

<Style TargetType="{x:Type ListBoxItem}"> <Style.Triggers> <EventTrigger RoutedEvent="PreviewGotKeyboardFocus"> <BeginStoryboard> <Storyboard> <BooleanAnimationUsingKeyFrames Storyboard.TargetProperty="(ListBoxItem.IsSelected)"> <DiscreteBooleanKeyFrame KeyTime="0" Value="True"/> </BooleanAnimationUsingKeyFrames> </Storyboard> </BeginStoryboard> </EventTrigger> </Style.Triggers> </Style>