Navigation arrow not working

[Miłosz]

Hi,

I've problem with TabControl inside RadBusyIndicator. Lower navigation arrow is disabled when there is no space for all TabItem headers. It's enabled only when I'm click on random header. If I remove TabControl from indicator, arrow is enabled and everything works fine. I attached sample project with this problem (change jpg extension to zip).

 

OS: Windows 10

Silverlight: 5

Telerik product version: 2019.1.128.1050

[Vladimir Stoyanov]

Hello Miłosz,

Thank you for the provided sample project.

I was able to reproduce the described behavior on my end. I investigated it and in order to avoid it, you can handle the Loaded event of the RadTabControl and call the ScrollToHorizontalOffset method of the ScrollViewer inside the RadTabControl. You can access it, using the ChildrenOfType extension method. Here is what I have in mind:

private void RadTabControl_Loaded(object sender, RoutedEventArgs e)
        {
            var tabControl = sender as RadTabControl;

            var scrollViewer = tabControl.ChildrenOfType<ScrollViewer>().FirstOrDefault();
            Dispatcher.BeginInvoke(new Action(() =>
            {
                scrollViewer.ScrollToHorizontalOffset(5);
            }));
        }

Can you give this approach a try and let me know how it goes?

I am looking forward to your reply.

Regards,
Vladimir Stoyanov
Progress Telerik

[Miłosz]

thank you, I tested your solution and it works just fine :) Is that going to be fixed on next release or this 'hack' must stay forever in our code? ;)

[Vladimir Stoyanov]

Hello Milosz,

I am glad to hear that my suggestion was helpful. 

I have logged an item in our feedback portal for this scenario: TabControl: Incorrect navigation behavior when the control is placed within a BusyIndicator. I have also updated your telerik points for bringing this to our attention. 

I am afraid that I cannot commit to a certain time frame for a possible fix. That said, you can follow the feedback item in order to get notified for any developments. 

Regards,
Vladimir Stoyanov
Progress Telerik