例如，您可以覆盖窗口的 OnPreviewKeyDown 方法，例如:

You could for example override the OnPreviewKeyDown method of your window, e.g.:

protected override void OnPreviewKeyDown(KeyEventArgs e)
{
    base.OnPreviewKeyDown(e);
    if (e.Key == Key.B)
    {
        //...
    }
}