WPF:如何在不禁用箭头键导航的情况下禁用选项卡导航? [英] WPF: How to disable tab navigation without also disabling arrow key navigation?

问题描述

我已在窗口中的所有控件上将 IsTabStop 设置为 false，因此当我按下 Tab 键时，焦点不会移动(我需要 Tab 键来做其他事情).但是这样做会破坏箭头键导航 - 我单击 ListView 中的一个项目，然后按向上/向下键不会再更改所选项目.

I have set IsTabStop to false on all controls in my window, so that when I press the Tab key, the focus doesn't move (I need the Tab key for something else). But doing this breaks arrow key navigation - I click on an item in a ListView and then pressing up/down doesn't change the selected item anymore.

有没有办法禁用标签导航，但不触摸箭头键导航?它们似乎是相关的.

Is there a way to disable tab navigation, but without touching arrow key navigation? They seem to be related.

我尝试将 IsTabStop 设置为 true 并将 TabNavigation 设置为 false，但它也不起作用.

I tried setting IsTabStop to true and TabNavigation to false, but it doesn't work either.

<ListView ItemContainerStyle="{StaticResource ItemCommon}" IsTabStop="False">
    <ListView.Resources>
        <Style x:Key="ItemCommon">
            <Setter Property="IsTabStop" Value="False"/>
            <Setter Property="KeyboardNavigation.TabNavigation" Value="None"/>
            <Setter Property="KeyboardNavigation.DirectionalNavigation" Value="Cycle"/>
        </Style>
    </ListView.Resources>
</ListView>

推荐答案

在您的窗口(或您不想使用 tab 的控件的某些祖先)上吞下 tab 键.

On your window (or some ancestor of the controls you don't want tab to work on) swallow the tab key.

您可以通过附加到 PreviewKeyDown 事件并在键是选项卡时设置 e.Handled = true 来吞下它.

You can swallow it by attaching to the PreviewKeyDown event and set e.Handled = true when the key is a tab.

纯代码背后:

 public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();

            this.PreviewKeyDown += MainWindowPreviewKeyDown;
        }

        static void MainWindowPreviewKeyDown(object sender, KeyEventArgs e)
        {
            if(e.Key == Key.Tab)
            {
                e.Handled = true;
            }
        }
    }

您也可以这样设置键盘处理程序:

You can also set a Keyboard handler as such:

<Window x:Class="TabSwallowTest.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="MainWindow" Height="350" Width="525"
        Keyboard.PreviewKeyDown="Window_PreviewKeyDown" >

    <StackPanel>
        <TextBox Width="200" Margin="10"></TextBox>
        <TextBox Width="200" Margin="10"></TextBox>
    </StackPanel>
</Window>

但您需要相应的事件处理程序:

but you'll need a corresponding event handler:

   private void Window_PreviewKeyDown(object sender, KeyEventArgs e)

    {
        if (e.Key == Key.Tab)
        {
            e.Handled = true;
        }
    }

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