Hi All,
I am not able to identify where ) is expected.
Basic questions but I am struggling over here.
never ommit AsEnumerable
give a retry at
(From row in dtInput.AsEnumerable
Group row by k=row("Trade Date").toString.Trim into grp=Group
Select r=grp.First()).CopyToDataTable
You might missed the closed braces in the expression, try using the below expression,
dtInput.AsEnumerable.GroupBy(Function(row) row("Trade Date").ToString).Select(Function(grp) grp.First).Copytodatatable()
Check the below image for better understanding,
Hope it helps!!

