[C#, MSAccess] Update DB using DataAdapter

[Kermit]

Hi,
I have the following problem. I load 3 tables to a dataset aaco, and then perform some operations on two tables (insert 1 row in the first table, update one field in the second), and try to call dataAdapter.Update method, and I get an exception.

Tables:
- audits (id, object id, ...)
- controlledObjetcs (id, ...)

[c# code]
OleDbCommandBuilder myCommandBuilder = new OleDbCommandBuilder(aacoDataAdapter);
aacoDataAdapter.Update(ds, "audits");
aacoDataAdapter.Update(ds, "controlledObjects"); <=* exception thrown here
[/code]

aacoDataAdapter - OleDbDataAdapter
ds - DataSet

* Exception: "Missing the DataColumn 'objectId' in the DataTable 'controlledObjects' for the SourceColumn 'objectId'."

But there cannot be such a column, because it is in the audits table, not in the controlledObjects one :|

[Shashi Sadasivan]

seems the dataAdapter is hooked on to the audits table,
try to create a different adapter for the other table

[Kermit]

seems the dataAdapter is hooked on to the audits table,
try to create a different adapter for the other table

It worked, thanks. I haven't thought about that. But is there another way to do that using only one data adapter?

[Kermit]

Another question on the topic:
How can I check for any difference between data stored in dataset, and in the database.

For example: I have dataset that has data retrieved from the database.
I add a row, and then remove it. The data is still the same. Now, on closing the application I'd like to inform the user, that the dataset and the database contain different information, but only when they really do.

Does C# have any tools for checking such stuff?

Thanks in advance.