private void UpdateDataSet(DataSet dataSet)

{

    // Check for changes with the HasChanges method first.

    if(!dataSet.HasChanges()) return;

    // Create temporary DataSet variable.

    DataSet tempDataSet;

    // GetChanges for modified rows only.

    tempDataSet = dataSet.GetChanges(DataRowState.Modified);

    // Check the DataSet for errors.

    if(tempDataSet.HasErrors)

    {

        // Insert code to resolve errors.

    }

    // After fixing errors, update the data source with

    // the DataAdapter used to create the DataSet.

    myOleDbDataAdapter.Update(tempDataSet);

}