updating child table

I have a parent child relation set up in both .net and in
sql. When I run the data adaptor to update added records
(DataViewRowState.Added) in the parent table, the child
records are automatically set to modified. Then when I
want to run the data adaptor to insert the child records,
because they have been chanbged from added to modified,
they are not inserted.

This makes the pattern--update parent, then update child--
impossible to carry out.

This seems to be a bug in the data adapter. The one
posting that admits this: 320301 does not work for me.

I need the answer in C# please.