Windows 10: I deleted all my worlds minecraft worlds.

I was trying to get out of the beta on windows 10 edition, and it said to delete Minecraft so i did but it deleted all my worlds. i looked at other threads and none of them helped when i go to restore previous versions it says there are no previous versions.

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Missing world is in my folders but not in Minecraft W10 world list.

I have this one world on minecraft windows 10 editon that disappeared from my world list when my laptop froze and restarted. Upon going back on minecraft, the world disappeared. I've looked in the worlds folder and its still there, but its not on the world
list. What should I do to get it back on the worlds list? PLEASE make sure your answer deals with Minecraft WINDOWS 10 EDITION and not the JAVA EDITION please.

 

Minecraft worlds won't show up on the world list.

So when my laptop crashed while I was playing minecraft, the world disappeared. There was another question on here stating the same thing and one of the replys showed how to get it back. I went on the minecraft worlds folder and it was there but it never
showed up on the list on the actual game. I went back on minecraft and ALL my worlds were missing from the list! So my question is, How do I get them back to showing on the game?

 

Recovering Minecraft world

I have the microsoft windows 10 version of minecraft and was having trouble joining some friends on the xbox one version. I deleted minecraft and reinstalled it to hopefully be able to join their world, but when i logged back in, my worlds were not there
anymore. I believe that i did not have the world backed up in a file. Is there any way to recover my worlds after deleting and reinstalling?