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        public static void RemoveFileSecurity(string FileName, string Account, FileSystemRights Rights, AccessControlType ControlType)
        {
            FileName = "D:\\uploads\\filename.pdf";

            // Create a new FileInfo object.
            FileInfo fInfo = new FileInfo(FileName);

            // Get a FileSecurity object that represents the
            // current security settings.
            FileSecurity fSecurity = fInfo.GetAccessControl();

            // identify and remove execute access rules
            AuthorizationRuleCollection accessRules = fSecurity.GetAccessRules(true, true, typeof(NTAccount));

            foreach (FileSystemAccessRule rule in accessRules)
            {
                if ((rule.FileSystemRights & FileSystemRights.ExecuteFile) == FileSystemRights.ExecuteFile)
                {
                    // Remove the execute access rule
                    fSecurity.RemoveAccessRule(rule);
                }
            }

            // Add the FileSystemAccessRule to the security settings.
            //fSecurity.RemoveAccessRule(new FileSystemAccessRule(Account,
            //                                                Rights,
            //                                                ControlType));

            // Set the new access settings.
            fInfo.SetAccessControl(fSecurity);
            // fInfo.SetAccessControl(FileName, fSecurity);
        }