Is it possible to disable a ScrollViewer from inside the ScrollViewer?

Question

From a UserControl, I would like to disable a ScrollViewer which is defined one level higher. My scenario looks something like this:

<!-- ... -->
<ScrollViewer VerticalScrollBarVisibility="Auto"
              HorizontalScrollBarVisibility="Disabled">
    <custom:MyUserControl ... />
</ScrollViewer>

Now, I would like to disable the ScrollViewer from within MyUserControl. Is this possible?

Background:
I have defined a custom TabControl style where I added a ScrollViewer for each item's content automatically. However, in one case, I do not want to use that ScrollViewer, but rather make the content size to the available space, whereas in all other cases I do want to use the ScrollViewer. Any ideas? Of course, I could add a ScrollViewer to every tab item manually, except for the one item, but that is not what I want.

Answer 1

In code you should be able to do it like this:

try
{
    ((ScrollViewer)Parent).IsEnabled = false;
}
catch (Exception exc)
{
    MessageBox.Show(exc.Message);
}

I've also done it before using triggers in XAML if you need to do it that way let me know and I can post code