private void btnAward_Click(object sender, EventArgs e) { Actor actor = (Actor)lbActors.SelectedItem; AddAwards forma = new AddAwards(null, this, actor); forma.ShowDialog(); if (this.award != null) { if (!DataProvider.addAward(award)) { MessageBox.Show("Error."); } else if (!DataProvider.ActorAward(actor, award)) { MessageBox.Show("Error."); } else { MessageBox.Show("Award added successfully."); } } else { MessageBox.Show("Award not added."); } }