Title: Delete/add item in RadioGroup
Use Delete and Add procedures of the RadioGroup.Items for removing and adding item.
If you want add item in RadioGroup to a defined place, then use Exchange procedure after Add procedure.
procedure TForm1.Button1Click(Sender: TObject);
begin
RadioGroup1.Items.Delete(2);
end;
procedure TForm1.Button2Click(Sender: TObject);
begin
with RadioGroup1 do
begin
Items.Add(' New'+IntToStr(Items.Count-2));
Items.Exchange(2, Items.Count-1);
end;
end;