When you set this.Update(competitorDataSet.Odrasli);
the TableAdapter
updates the changes from DataTable
(news, deleted, updated rows) to the database.
Since you call competitorDataSet.Growns.AcceptChanges();
before TableAdapter.Update
, all changes in the table are already accepted and TableAdapter has nothing to update.
So just remove
competitorDataSet.Growns.AcceptChanges();
Also, if you set this.grownsTableAdapter.Adapter.AcceptChangesDuringUpdate = true
before grownsTableAdapter.Update(competitorDataSet.Odrasli);
, the changes will be accepted and so you don't need to accept changes yourself (and it seems to me that default value is True so I am not sure this line is required)