All Other Items Become "Disabled" When DropDown Is Open

[intellitechcorporation]

Telerik Support,

When a user has the DropDown to a ComboBox open, it becomes impossible to focus/click on any other element (seemingly in the entire program) until the DropDown is closed.  I understand that this is the standard behavior even with the regular WPF ComboBox control, so what I'm wondering is if there's any way to change this behavior.

Thanks,

Kyle

[Boyan]

Hello Kyle,

Unfortunately there is no way to change this behavior. This is the default behavior of all controls using popup like ComboBox, DateTimePicker, Menu etc..

All the best,
Boyan
the Telerik team

[intellitechcorporation]

In case anyone is coming across this and looking for a solution, it's actually incredibly simple.

public class RadComboBoxEx : RadComboBox
    {
        public RadComboBoxEx()
        {
            this.DropDownOpened += new EventHandler(RadComboBoxEx_DropDownOpened);
        }

        void RadComboBoxEx_DropDownOpened(object sender, EventArgs e)
        {
            ReleaseMouseCapture();
        }
    }

So far I haven't noticed any drawbacks to this, the dropdown will close once you click any other control that is focusable, and the dropdown still responds to item clicks as you would expect.