public void Show() { while (true) { UserManagementEnum choice = RenderMenu(); switch (choice) { case UserManagementEnum.GetAll: { GetAll(); break; } case UserManagementEnum.Add: { Add(); break; } case UserManagementEnum.Edit: { Edit(); break; } case UserManagementEnum.Delete: { Delete(); break; } case UserManagementEnum.Logout: { AuthenticationService.AuthenticatLogoutAccount(AuthenticationService.LoggedUser); break; } case UserManagementEnum.Exit: { System.Environment.Exit(0); break; } } if (AuthenticationService.LoggedUser == null) { break; } } }