Question

Is there a way, to merge two dataTables table1 and table2 by different keys?

Want to do dataTable.Merge by t1 PK_id and t2 ParentId. Is this possible if ParentId is not a PK?

table1

PK_id   Name
--------------
  1     test1
  2     test2
  3     test3

table2

PK_id2  ShortName  ParentId
---------------------------
   1       a           1
   2       b           1
   3       c           2

Result is a right join

PK_id   Name   PK_id2  ShortName  ParentId
------------------------------------------------
   1    test1     1        a          1
   1    test1     2        b          1
   2    test2     3        c          2
   3    test3    null     null      null

Thanks in advance.

Answer 1

Using linq will probably be your best bet. There will be some extra things you’ll have to add to your code but this example does a really nice job of explaining it.

http://support.microsoft.com/kb/326080/en-us