No, the problem is that the FTP protocol does not specify a way of changing file permissions. Some servers support it using SITE commands such as
site chmod 755 myfile.txt
You can execute this command through the edtFTPnet API using:
ftpConnection.InvokeSiteCommand("CHMOD", "755", "myfile.txt")
Obviously the value of the last 2 arguments vary.
Of course your server may not support that command. Or it may be that it has defined some other command for it.
- Hans (EDT)