private void Init()
        {
            var assembly = typeof(LoginPage);

            iconImage.Source = ImageSource.FromResource("HelloWorld.Assets.Images.paypal.png", assembly);

            BindingContext = this;
            IsBusy         = false;

            IsConnected = Connectivity.CheckConnectivity();

            txtEmail.Focus();
            txtEmail.Completed += (s, e) => txtPassword.Focus();

            txtEmail.TextChanged    += LoginTextWatcher_TextChanged;
            txtPassword.TextChanged += LoginTextWatcher_TextChanged;
        }