My camera deleted all of my pictures! how do i get them back?

First of all, do not save any new file to camera's memory card.

Take out memory card, and connect it to computer using a card reader. You should see memory card shown as a drive letter (like H:) in Windows Explorer.
Download Asoftech photo recovery software, you can follow this article for detail steps
http://www.asoftech.com/articles/how-to-recover-deleted-photos-from-camera.html
Install and open the photo recovery software, select the memory card, and click 'Start' button.

First things first - do not take more photos and do not save anything back to the camera memory card. Then connect it to your PC. Install this digital camera photo recovery program to make a free scan and recover the deleted pics. Good luck!

All your pictures are saved on the memory card of your cannon digital camera automatically.So you can recover your deleted pictures from memory card with third party photo recovery software.I have a good photo recovery software that can recover data after deeply scanning your memory card to look for lost pictures you accidentally deleted. You can download it and scan your memory card for free to preview whether your deleted pictures can be recovered.http://www.any-data-recovery.com/index.htm

Hey, Read the following article, it tells you how to recover lost data for Canon digital camera.
http://www.card-data-recovery.com/canon-data-recovery.htm

Be relaxed! It is not difficult to successfully restore all your deleted pictures back from digital camera. Here are the detailed steps for you:
Step1. Stop using this camera in case that any new file would rewrite your original data.
Step2. Insert this camera to your computer and prepare to restore your data.
Step3. Download a camera deleted photo recovery freeware to your computer and start to retrieve all your deleted contents back:
http://www.freeware-fix.blogspot.com/2013/02/deleted-partition-file-recovery.html
In fact, this freeware has ever successfully saved all the inaccessible data of my friend off from his camera. So, I also believe it can also work successfully on your camera memory card, too.
Simply read more information of this freeware here:
http://www.freeware-fix.blogspot.com/2013/02/photo-recovery.html

Step4. Save and back up all the restored photos on a different memory card or drive in case of data recovery

Camera Recovery Softwarecan be used to recover deleted pictures from camera