private void loan_with_member_Click(object sender, EventArgs e) { try { Book b = lbResult.SelectedItem as Book; string Memberinfo = members_combo_box.SelectedItem.ToString(); Member m = memberService.GetMemberBySSN(Memberinfo.Split(':')[0].Trim()); Loan l = new Loan { TimeOfLoan = DateTime.Now, DueDate = DateTime.Now.AddDays(15), Book = bookCopyService.SetLoaned(b.Copies), Member = m }; memberService.UpdateMemberLoans(m, l); } catch (Exception ex) { UserError(ex); } }