Returning the difference between two data tables

[ppr (Peter Preuss)]

@jamills

Question… for the assign would it be: (some int32 variable) = dt2.AsEnumerable.Except(dt1.AsEnumerable,DataRowComparer.Default).ToList().Count()?

Yes, give a try as it is a quick approach
Except is looking on dt2 rows that are not present in dt1 and in this statement will return the count of this evaluation.

Except - LINQ Set operator