Program scroll bar arrow buttons functionality

In some programs, for example, Microsoft Office Excel, when you’re at the end of the document being edited and then press a right or down arrow of the scrollbars, then, you scroll further and the edited area will grow, producing more space for entering data. Can this functionali开发者_如何学Cty be implemented in WPF?

I tried using ScrollBar instead of ScrollView to get more control, but didn’t succeed. If the scroll bar is at its maximum value, pressing the right or down (depending on the orientation) button of it doesn’t fire the scroll event.