protected void search_Click(object sender, EventArgs e) { ManagementService service = new ManagementService(); List<ManagementService.Person> people = service.GetColleagues(firstName.Text, lastName.Text); if (people == null || people.Count == 0) { result.Text = "Not Found"; } else { StringBuilder resultString = new StringBuilder(); foreach (ManagementService.Person person in people) { resultString.AppendLine(person.ToString()); } result.Text = resultString.ToString(); } }