public MainWindow() { InitializeComponent(); #region call service to test connectivity //// Create a Proxy Object to communicate with the wcf service. //NorthwindServiceContractClient proxy = new NorthwindServiceContractClient(); //// Call the Select Employeee Method of the service and handle the return. //NorthwindEmployee[] employees = proxy.SelectEmployees(); //// always close the proxy object //proxy.Close(); ////Display the Lastname of th First Employee in a messagebox //// MessageBox.Show("Last Name {0}", employees[0].LastName); //MessageBox.Show(employees[0].LastName); #endregion string[] titles = DataGateway.SelectEmployeeTitles(); foreach (string tl in titles) { combobox1.Items.Add(tl); } }