The process cannot access the .png file. How to solve the problem?

Question

C++ / C#

In short, the program repaints the pixels in the image and creates a new one in another folder. When I clear a folder with an old photo, I get this error. How to close the photo editing process?

Answer 1

Close processes through task manager.

Answer 2

At you process does not close correctly processed file. Because of this, the directory is not deleted.

Answer 3

new Bitmap(img);
or without brackets