how to delete image from foder

Question

i am storing image name for ex img1.jpg in database (sqlserver 2005) as well as in images folder in application with the same name storing in database.
i am using gridview and use checkbox as a template column . and delete button outside of the grid to delete the checked records.
i want to delete the image from image foder when i delete a record from the gridview .
how to do that does any one that...?