如何使用UWP中的TextBox的KeyDown事件捕获Ctrl-V或启用右击粘贴选项

private void TextBox_KeyDown(object sender, KeyRoutedEventArgs e)
{
    if (e.Key == Windows.System.VirtualKey.V && (Window.Current.CoreWindow.GetKeyState(Windows.System.VirtualKey.Control) & CoreVirtualKeyStates.Down) == CoreVirtualKeyStates.Down)
    {
        // 执行粘贴操作
        // ...
    }
}

private void TextBox_RightTapped(object sender, RightTappedRoutedEventArgs e)
{
    TextBox textBox = (TextBox)sender;

    // 创建粘贴命令
    var pasteCommand = new Windows.UI.Xaml.Input.StandardUICommand(Windows.UI.Xaml.Input.StandardUICommandKind.Paste);

    // 将粘贴命令添加到右键菜单
    var menu = new PopupMenu();
    menu.Commands.Add(pasteCommand);
    menu.ShowForElement(textBox, e.GetPosition(textBox));
}