Hello,

 Conversation which you want to do is a little complicate because when UltraComboEditor is managed to MultiSelect, it returns as value List<object>. However what I could suggest you is to is first to generate two methods. Fist one could convert single int to Enum flag:

List<object> ConvertIntToE(int i, UltraComboEditor combo)

        {

            E es = (E)i;

            Notify("Value");

            return Enum.GetValues(typeof(E)).Cast<E>().Where(v => es.HasFlag(v)).Cast<object>().ToList<object>();

        }

The second method should convert UltraComboEditor value to single int:

int ConvertComboVlaueToInt()

        {

            List<object> l = (List<object>)ultraComboEditor1.Value;

            if (l == null)

                return 0;

            int res = 0;

            foreach (object o in l)

                res += (int)o;

            Notify("Value");

            return res;

        }

So I have implement my idea in a user control , and have used UltraContinerEditor for editor of UltraGrid. Please see attached sample. More information about UltraContinerEditor you could find on the following link:

http://help.infragistics.com/Help/NetAdvantage/WinForms/2012.1/CLR2.0/html/WinControlContainerEditor_Understanding_WinControlContainerEditor.html

http://help.infragistics.com/Help/NetAdvantage/WinForms/2012.1/CLR2.0/html/WinControlContainerEditor_Using_WinControlContainerEditor.html

I hope that this will helps you.