How to restore automatic display of the latest data after panning or zooming in the scrollable example?

[tp1415926535]

I tried to use the scrollable example and call the "ReadData" method in the constructor:

        private async Task ReadData()
        {
            var r = new Random();
            while (true)
            {
                await Task.Delay(500);
                _values.Add(new ObservablePoint(_values.Count, 1000 + r.Next(-20, 20)));
            }
        }

The x-axis of the main view will show the latest added data after startup, but once panned or zoomed, the x-axis in the field of view no longer changes, how do I restore the latest display of the x-axis?
If possible, I would like to be able to keep the zoomed range while showing the latest value, like always right-aligning the scrollbar.