private void btn_deluser_Click(object sender, EventArgs e) //Button delete user { int i = grid_results_adm.CurrentRow.Index; string id = grid_results_adm["UserID", i].Value.ToString(); BibliotechDAL bd = new BibliotechDAL(); int s = bd.UserNbrOfLoans(id); if (s == 0) { bd.DeleteUser(id); FillViewUsers(); } else { MessageBox.Show("Går ej att radera, användaren har lån"); } }