private void button1_Click(object sender, EventArgs e)
        {
            //execute sql based on given parameters
            MusicianBand musicianBand = new MusicianBand();

            musicianBand.musicianId = lsbxMusicians.SelectedIndex;
            musicianBand.bandId     = cmbxBands.SelectedIndex;
            musicianBand.joinedBand = txtJoined.Text;
            musicianBand.leftBand   = txtLeft.Text;
            if (rBtnPlayed.Checked)
            {
                musicianBand.playedOnRelease = true;
            }

            mdbRepo.CreateRelationship(musicianBand);
            MessageBox.Show("Musicians added to band");
        }
        public void CreateRelationship(MusicianBand musicianBand)
        {
            using (SqlConnection conn = new SqlConnection(connectionString))
            {
                SqlCommand cmd = new SqlCommand("sp_MusicianBandInsert", conn);
                cmd.CommandType = CommandType.StoredProcedure;
                cmd.Parameters.AddWithValue("@MusicianID", musicianBand.musicianId);
                cmd.Parameters.AddWithValue("@BandID", musicianBand.bandId);
                cmd.Parameters.AddWithValue("@JoinedBand", musicianBand.joinedBand);
                cmd.Parameters.AddWithValue("@LeftBand", musicianBand.leftBand);
                cmd.Parameters.AddWithValue("@PlayedOnRelease", musicianBand.playedOnRelease);
                conn.Open();
                cmd.ExecuteNonQuery();
                conn.Close();

                //if (i != 0)
                //{
                //    //add error
                //}
            }
        }