private void OnDataSetTablesChanging(object oTablesCollection, CollectionChangeEventArgs args)
{
// args.Action is one of CollectionChangeAction.Add, CollectionChangeAction.Remove or CollectionChangeAction.Refresh
// args.Element is a table
// Disallow changing the tables collection (since we are subscribed only in populated mode, we allow changes in any state but non-populated mode)
throw new InvalidOperationException(SR.DataDom_DataSetTablesChange);
}