Scroll a WPF FlowDocumentScrollViewer from code?

Question

I have a FlowDocumentScrollViewer I want to automatically scroll to the bottom when text is added.

<FlowDocumentScrollViewer Name="Scroller">
 <FlowDocument Foreground="White" Name="docDebug" FontFamily="Terminal">
  <Paragraph Name="paragraphDebug"/>
 </FlowDocument>
</FlowDocumentScrollViewer>

In code I add Inlines to the Paragraph, but when there is to much text I would like to be able to simply scroll down using code instead of having the user doing so.

Any suggestions?

Answer 1

The other answers given here are a bit puzzling, since I don't see any public "ScrollViewer" property on the FlowDocumentScrollViewer.

I hacked around the problem like this. Beware that this method can return null during initialization:

public static ScrollViewer FindScrollViewer(this FlowDocumentScrollViewer flowDocumentScrollViewer)
{
    if (VisualTreeHelper.GetChildrenCount(flowDocumentScrollViewer) == 0)
    {
        return null;
    }

    // Border is the first child of first child of a ScrolldocumentViewer
    DependencyObject firstChild = VisualTreeHelper.GetChild(flowDocumentScrollViewer, 0);
    if (firstChild == null)
    {
        return null;
    }

    Decorator border = VisualTreeHelper.GetChild(firstChild, 0) as Decorator;

    if (border == null)
    {
        return null;
    }

    return border.Child as ScrollViewer;
}