public UserControlCenterViewModel()
     : base()
 {
     base.Title = "User Control";
     base.Type = SnapInNames.UserControl;
     base.Logo = new Uri("pack://application:,,,/NFCAccessControlCenter;component/Images/Navigation/usercontrol.png", UriKind.Absolute);
     _userService = UserService.Instance;
     _nfcTagService = NfcTagService.Instance;
     _accessProfileService = AccessProfileService.Instance;
     _dialogService = DialogService.Instance;
 }
 public MainViewModel()
     : base()
 {
     base.Title = "Home";
     base.Type = SnapInNames.Main;
     base.Logo = new Uri("pack://application:,,,/NFCAccessControlCenter;component/Images/Navigation/home.png", UriKind.Absolute);
     base.InNavigation = false;
     _accessProfileService = AccessProfileService.Instance;
     _userService = UserService.Instance;
     _nfcTagService = NfcTagService.Instance;
     _userService.UserCollectionChanged += (sender, args) => { this.LoadData(); };
 }