> >if(SomeCondition) > Data = Data.GroupBy(g => g.Destination).Select(s => s.First()).ToList(); >else > Data = Data.GroupBy(g => g.DialCode).Select(s => s.First()).ToList(); > >// Is there a way I can define a Func<> or something to replace this ? > >Func< "What do I put here"> grouper = "What do I put here"; >// so I can say > >Data = Data.GroupBy(grouper).Select(s => s.First()).ToList(); >We used expression trees to do custom lambdas... I'll be interested in seeing what others come up with....