public AddClientToBusinessPage(BusinessClientsListViewModel parentViewModel)
        {
            _businessId      = parentViewModel.BusinessId;
            _parentViewModel = parentViewModel;
            InitializeComponent();

            this.BindingContext = this;
        }
        public ClientProfilePage(BusinessClient client, BusinessClientsListViewModel parentViewModel)
        {
            InitializeComponent();

            VM = new BusinessClientViewModel(client, parentViewModel);
            this.BindingContext = VM;

            this.Title = VM.UserName;
        }