WPF 回车转Tab实现跳转

1.重写窗体的KeyDown事件

    protected override void OnKeyDown(KeyEventArgs e)
    {
        if (e.Key == Key.Enter)
        {
            // MoveFocus takes a TraveralReqest as its argument.
            TraversalRequest request = new TraversalRequest(FocusNavigationDirection.Next);
     
            // Gets the element with keyboard focus.
            UIElement elementWithFocus = Keyboard.FocusedElement as UIElement;
     
            // Change keyboard focus.
            if (elementWithFocus != null)
            {
                elementWithFocus.MoveFocus(request);
            }
            e.Handled = true;
        }
        base.OnKeyDown(e);
    }

 2.在基容器如Grid的KeyDown事件中

    private void Grid_KeyDown(object sender, KeyEventArgs e)
    {
        var uie = e.OriginalSource as UIElement;
        if (e.Key == Key.Enter)
        {
            uie.MoveFocus(new TraversalRequest(FocusNavigationDirection.Next));
            e.Handled = true;
        }
    }