Force radcombobox to open UP

[Mark]

Is there a way to force the combobox to open "UP" instead of the default of dropping the list of items "down"?
Thanks
Mark

[Vladi]

Hello Mark,

In the current version of RadComboBox this feature is not supported.

If you have any other questions do not hesitate to contact us again.

Kind regards,
Vladi
the Telerik team

[Darshan]

I see there is no easy solution to this in Telerik WPF.

This can be done as below.

private void CmbRhythmStanding_OnLoaded(object sender, RoutedEventArgs e)
        {
            ControlTemplate ct = CmbRhythmStanding.Template;
            System.Windows.Controls.Primitives.Popup pop = ct.FindName("PART_Popup", CmbRhythmStanding) as System.Windows.Controls.Primitives.Popup;
            pop.Placement = System.Windows.Controls.Primitives.PlacementMode.Top;
        }

[Dinko | Tech Support Engineer]

Hi Darshan,

You are right that if you want to change the Placement property of the Popup, you will need to set it directly to the element. What you can use instead of the FindName method is to use our ChildrenOfType<T>() extension method. Still, both approaches need to search in the visual tree to get the Popup element.

private void Combo_Loaded(object sender, RoutedEventArgs e)
{
    var popup = (sender as RadComboBox).ChildrenOfType<Popup>().FirstOrDefault();
    popup.Placement = System.Windows.Controls.Primitives.PlacementMode.Top;
}

Regards,
Dinko
Progress Telerik

[Darshan]

Thank you Dinko, I tried it with ChildrenOfType<T>() extension and it works.