>Hi All, I have a generic List property in my class called Data and depending on certain conditions want to apply a groupby at the end of processing, this is how I currently do it and it works fine.
>
>
>

>
>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....