class Program
    {
        static void Main(string[] args)
        {
            SetWorkingACL(@"E:\TestMusic - Copy\The Monkees\I'm A Believer And Other Hits\Folder.jpg");
        }

        private static void SetWorkingACL(string folderImage)
        {
            // Get the security information for the file.
            FileSecurity fs = File.GetAccessControl(folderImage);

            // Remove the inherited permissions.
            fs.SetAccessRuleProtection(true, false);

            // Get a collection of existing permissions.
            AuthorizationRuleCollection rules = fs.GetAccessRules(true, true, typeof(NTAccount));

            // Loop through and delete all explicit permissions.
            // The loop processes explicit and inherited permissions but
            // the RemoveAccessRule method won't remove
            // the inherited permissions - which were removed
            // above by SetAccessRuleProtection anyway.
            foreach (AuthorizationRule rule in rules)
            {
                if (rule is AccessRule)
                {
                    fs.RemoveAccessRule((FileSystemAccessRule)rule);
                }
            }

            // Now add the two permissions I want.
            fs.AddAccessRule(new FileSystemAccessRule(@"ServerAdmin", FileSystemRights.FullControl, AccessControlType.Allow));
            fs.AddAccessRule(new FileSystemAccessRule(@"Users", FileSystemRights.ReadAndExecute, AccessControlType.Allow));

            // Commit the changes to the file.
            File.SetAccessControl(folderImage, fs);
        }
    }