troubleshooting Question

How do I get the difference in 2 datatables

Avatar of matthew phung
matthew phung asked on
C#Microsoft SQL Server 2008LINQ QuerySQL
8 Comments1 Solution153 ViewsLast Modified:
I have 2 datatables,

Table A        Table B
1                   3
2                   4
3                   5
                     6

I want the results to be

Table C
1
2

I thought this was called a left outer join but statement is not giving me the correct results

               var results = (from rA in dtA.AsEnumerable()
                                                 join rB in dtB.AsEnumerable()
                                         on rA.Field<string>(PrimaryKeyName) equals rB.Field<string>(PrimaryKeyName) into joinedRows
                                                 from ab in joinedRows.DefaultIfEmpty()
                                                 select ab);
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