Conect manualy from MS sql to datagrid?

Question

I need to conect line 8 and statement from line 13 to end

 

private void trenutne_zalihe2()
        {
            using (SqlConnection openCon = new SqlConnection(cs))

            {


                string saveStaff = "Select id as 'id', roba as 'Naziv artikla', kolicina as 'Kolicina' from mp_faktura_roba";

                using (SqlDataAdapter querySaveStaff = new SqlDataAdapter(saveStaff, cs))

                {
                    DataTable dt = new DataTable();
                    querySaveStaff.Fill(dt);
                    trenutnazalihadataGridView.DataSource = dt;
                    trenutnazalihadataGridView.SelectionMode = DataGridViewSelectionMode.FullRowSelect;
                    trenutnazalihadataGridView.Columns["id"].Visible = false;
                    trenutnazalihadataGridView.Columns["redni_broj"].FillWeight = 100;
                    trenutnazalihadataGridView.Columns["naziv_artikla"].FillWeight = 571;


                    trenutnazalihadataGridView.Update();
                    trenutnazalihadataGridView.Refresh();
                }

            }

        }