How outlook implement the dynamic content change using C#

Question

Hi all, I'm building a software which has a UI similar as outlook 2003 using c#. The problem I'm facing is how can I perform dynamic content change while the user click the navigation buttons. I did think about using MDI but that is not what I want as it obviously not how the outlook implement. Thus, i think about using panels and swap between them. However, it seems very hard to design as i need to cover a new panel to the previous one. Is anyone can tell me how outlook implement the dynamic content change? thxs alot.