OracleDataAdapter changes table row state after first Update call

Question

I have a single dataset containining multiple tables, connected by relation with cascade constraints.
When I try to do something like:
OracleDataAdapter da1 = new OracleDataAdapter();
da1.InsertCommand = previouslyInitializedCommand;
OracleDataAdapter da2 = new OracleDataAdapter();
da2.InsertCommand = anotherCommand()
using (TransactionScope ts = new TransactionScope())
using (OracleConnecction conn = new OracleConnection(connString))
conn.Open();
da1.InsertCommand.Connection = conn;
da2.InsertCommand.Connection = conn;
da1.Update(dataset.Table1);
da2.Update(dataset.Table2);
ts.Complete();
The second Update never happens because the first Update call changes Table2 row status to "Unmodified" so no INSERT command is issued.
Anyone knows how this behaviour can be avoided?

Answer 1

Hi,
Maybe take a look here: [http://msdn.microsoft.com/en-US/library/33y2221y%28v=vs.80%29.aspx]
I would focus on this part:
Ordering of Inserts, Updates, and Deletes
In many circumstances, the order in which changes made through the DataSet are sent to the data source is important. For example, if a primary key value for an existing row is updated and a new row has been added with the new primary key value as a foreign key, it is important to process the update before the insert.
You can use the Select method of the DataTable to return a DataRow array that only references rows with a particular RowState. You can then pass the returned DataRow array to the Update method of the DataAdapter to process the modified rows. By specifying a subset of rows to be updated, you can control the order in which inserts, updates, and deletes are processed.
DataTable table = dataSet.Tables["Customers"];
// First process deletes.
adapter.Update(table.Select(null, null, DataViewRowState.Deleted));
// Next process updates.
adapter.Update(table.Select(null, null,
  DataViewRowState.ModifiedCurrent));
// Finally, process inserts.
adapter.Update(table.Select(null, null, DataViewRowState.Added));r,
dennis