DraggableView.v2.cs

        public static readonly BindableProperty NewXProperty = BindableProperty.Create(
           propertyName: nameof(NewX),
           returnType: typeof(double),
           declaringType: typeof(DraggableView));

        public double NewX
        {
            get => (double)GetValue(NewXProperty);
            set => SetValue(NewXProperty, value);
        }

        public static readonly BindableProperty NewYProperty = BindableProperty.Create(
           propertyName: nameof(NewY),
           returnType: typeof(double),
           declaringType: typeof(DraggableView));

        public double NewY
        {
            get => (double)GetValue(NewYProperty);
            set => SetValue(NewYProperty, value);
        }