.net - Is there a WPF control I can use to expand/collapse panels (animated) -

I have a window that has lots of content, I want to be able to separate the contents using panels, and A separator maintains that the user can click the toggle between each panel (with an animation that moves the separator from left to right, showing a section and hides the other). Think of Microsoft Office (2007), is this an easy way to accomplish this?

Thank you

I think what you want "Accord" control, Here's a post, how can one expander make a pile of control:

And take a look at the "reveal" control from Kevin Bag-o for the animation. / P>

I think there is also an animated expander control template based on the manifest control in the sample project.