How to scroll to the bottom of a ScrollViewer automatically with Xaml and binding?

Question

I\'ve got a TextBlock whose content is data bound to a string property of the ViewModel. This TextBlock has a ScrollViewer wrapped aro

Answer 1

I was using @Roy T. 's answer, however I wanted the added stipulation that if you scrolled back in time, but then added text, the scroll view should auto scroll to bottom.

I used this:

private static void ScrollViewer_ScrollChanged(object sender, ScrollChangedEventArgs e)
{
    var scrollViewer = sender as ScrollViewer;

    if (e.ExtentHeightChange > 0)
    {
        scrollViewer.ScrollToEnd();
    }    
}

in place of the SizeChanged event.