It would be nice if the RadzenDropDown had a customisable text when all items in the list are selected.
A common UI practise is using drop downs to act as search filters. Let's say for example you are searching for a car on a website that sells cars. You might have a colour filter (red, blue, green etc.) and a type filter (hatchback, SUV, estate, truck etc.). By default no filters are applied, you apply filters to narrow your search. The trouble is than in implementing this practise with the RadzenDropDown rather than the drop downs saying "All colours" and "All Types" they will say something like "8 colours" and "6 types".
It would be enough that it just said "All 8 items selected" for example.