How to keep WPF MultiColumnDropDownControl stay open always?
WPF MultiColumnDropDownControl (SfMultiColumnDropDownControl), the drop-down control is displayed using Popup control. So, you can keep the drop-down control in an always open state by setting the StaysOpen property to True in the Popup control. It can be accessed from the control template of MultiColumnDropDownControl, by using the FindName method.
MultiColumnControl.Loaded += MultiColumnControl_Loaded;
void MultiColumnControl_Loaded(object sender, RoutedEventArgs e)
{
var popup = MultiColumnControl.Template.FindName("PART_Popup", MultiColumnControl) as Popup;
popup.StaysOpen = true;
}
You can refer to the sample from the following location.
I hope you enjoyed learning about how to keep MultiColumnDropDownControl stay open always.