I see lots of posts, such as this one, in computer help forums.
Though some may consider this as "spam", it isn't, becuase I want people to know about this software program...File Recover. It's not free, but the investment is worth it, since I have used this program and it truly is a "gem"...it does exactly what it is intended to do...and the $39.95 (USD) price is well worth the aggravation caused by accidental file deletion.
Not only should you have a program, such as this one, installed on your computer, you should always be constantly backing up any programs and/or files you want to save...in case something like this happens...I can't stress enough...BACKUP! BACKUP! BACKUP!
More about File Recover...