[C#, WPF] How to make a similar dropdown list?

Question

WPF

Click on the "+" button. Such a thing pops up, while all the tabs that are lower, respectively, move even lower, click on the "-" tab closes, and all the rest fall into place.
I think to do it on WPF .. But, I can’t imagine how to do this miracle, because I didn’t work with WPF enough. If you have ideas how to do it in pure code, without WPF, they are also good.
Thanks in advance.

Answer 1

If I understand correctly, the screenshot shows a tree, then use TreeView ( the first example from Google )
If you just need a peer-to-peer list whose elements can expand an additional panel with information, then I would suggest using ListView. Make an element template like this:

----------------------
|  (+)  Заголовок     |
----------------------
|    Скрываемая       |
|     Панелька        |
|     С инфой         |
----------------------

Make a binding on the IsVisible property of the panel and play it by pressing the - (+) button.

Answer 2

You need wpf accordion