I need to customize the filter popup to add some new choices.
I've tried to add item this way :
private void radGrid_FilterPopupRequired(object sender, FilterPopupRequiredEventArgs e)
var popUp = e.FilterPopup as RadListFilterPopup;
if (popUp == null)
var rmiSortByColor = new RadMenuItem("Sort by color");
Unfortunally, as you can see in the provided screenshot, the item is very huge, and the height increase proportionally when I resize the popup.
I have the exact same problem when I add a simple separator.
Did I miss something ?