When R-Studio Demo version has found a lost file larger than 64KB you may simply double click the file to preview it.
It's not a sure-fire solution but it can help depending on the type of file you've deleted. R-Studio Data Recovery, although sounding like a music program, actually helps you recover lost or accidentally deleted files. Of course, nowadays, with so many external backup options there is less chance it's going to happen but if it does, there is still hope. We've lost or deleted a file at some stage that was really important. Recover files that are lost or accidentally deleted