Interpret enter as tab WPF

问题

I want to interpret Enter key as Tab key in whole my WPF application, that is, everywhere in my application when user press Enter I want to focus the next focusable control,except when button is focused. Is there any way to do that in application life circle? Can anyone give me an example?
Thanks a lot!

回答1:

You can use my EnterKeyTraversal attached property code if you like. Add it to the top-level container on a WPF window and everything inside will treat enter as tab:

<StackPanel my:EnterKeyTraversal.IsEnabled="True">
    ...
</StackPanel>

回答2:

I got around woodyiii's issue by adding a FrameworkElement.Tag (whose value is IgnoreEnterKeyTraversal) to certain elements (buttons, comboboxes, or anything I want to ignore the enter key traversal) in my XAML. I then looked for this tag & value in the attached property. Like so:

    if (e.Key == Key.Enter)
    {
        if (ue.Tag != null && ue.Tag.ToString() == "IgnoreEnterKeyTraversal")
        {
            //ignore
        }
        else
        {
            e.Handled = true;
            ue.MoveFocus(new TraversalRequest(FocusNavigationDirection.Next));
        }
    }

回答3:

To change it in whole project you need to do this

In App.xaml.cs:

protected override void OnStartup(StartupEventArgs e)
{           
    EventManager.RegisterClassHandler(typeof(Grid), Grid.PreviewKeyDownEvent, new KeyEventHandler(Grid_PreviewKeyDown));
    base.OnStartup(e);
}

private void Grid_PreviewKeyDown(object sender, System.Windows.Input.KeyEventArgs e)
{
    var uie = e.OriginalSource as UIElement;

    if (e.Key == Key.Enter)
    {
        e.Handled = true;
        uie.MoveFocus(
        new TraversalRequest(
        FocusNavigationDirection.Next));
    }
}

Compile. And done it. Now you can use enter like tab. Note: This work for elements in the grid

回答4:

woodyiii, There is a function in the UIElement called PredictFocus() which by its name know its function, then you can check if that element is enabled or not so as to move the focus to it or not...

来源：https://stackoverflow.com/questions/871619/interpret-enter-as-tab-wpf

标签

wpf

keyboard-input