Question

I have a table in the following format:

Type   Date   Code
 1   01/01/13  AA
 1   01/01/13  AB
 1   01/01/13  FV
 1   02/01/13  AE

Using a join against another table, I can bring back the highest date by :-

g.Max(d => f.Field<DateTime>("End Date"))

which returns 02/01/13. What I would like to know is how to return “AE”, ie: the value in the adjacent column.

Answer 1

It you’re using LINQ to Objects (as it appears, having fetched a DataTable), you can use MoreLINQ which has a MaxBy method:

var code = g.MaxBy(f => f.Field<DateTime>("End Date"))
            .Field<string>("Code");

(Disclaimer: I started MoreLINQ a while ago, although others are now more active than I am.)