Is there a way to recover file(s) that have been deleted programatically by the File.Delete() method?
A program has deleted some files that I need to recover and they do not appear in the recycle bin.
Nope. File.Delete() calls a hard delete within the API and by-passes the Recycle Bin. You will need to use a file recovery program and hope for the best.
For deletion via the Recycle Bin you use the SHFileOperation API as it is part of the shell.
If/once you have your files back you might want to take a look at this SO answer which discusses changing File.Delete() to something that uses the Recycle Bin:
No, directly there is no way to recover it.
You can use a recovery program or API to get your files.
If the files are important I would shutdown the computer right away.
Take a look at this: C# classes to undelete files?
Same problem with answer.
来源：https://stackoverflow.com/questions/14200427/c-sharp-file-delete-recovery