Well,I saw in another thread in a video, that a guy moved a body arround.
I know this was possible in F3 or Oblivion,but so far I hav′nt found out how to do
it in Skyrim.Also moving things must be possible then..?
I′m playing on PC with a Microsoft controller,and I cant find the button in
option/controller.
How can I do it?

On the keyboard it's E, which is also the key to talk to people. Try that one, just press it longer then you would normally and you'll eventually start dragging things.

The Activate button is to move things, The same button you use to search a body. Just hold it down, and you will grab onto it.

I′ll try it now,thanks.

Lol.
After 38 hours of play,holding the button was the solution.
Is there any bigger noobs in here?LOL.
Thanks for help.