private void UserLoginCheck(object sender, System.Windows.RoutedEventArgs e) { ClientServerUtil csu = ClientServerUtil.getInstance(); csu.serverPc = ServerInput.Text; var username = UsernameInput.Text; var password = PasswordInput.Text; try { csu.login(username, password, this); LoginPanel.IsOpen = false; UsernameIfLoggedIn.Content = "Eingeloggt als \n" + UsernameInput.Text; initFactoryPulldown(csu); } catch (LoginException ex) { Console.WriteLine(ex.StackTrace); showPopUp(ex.Message); } }