socks5.TCP.Client.DataReceived C# (CSharp) Method

        private void DataReceived(IAsyncResult res)
        {
            Receiving = false;
            try
            {
                SocketError err = SocketError.Success;
                if(disposed)
                    return;
                int received = ((Socket)res.AsyncState).EndReceive(res, out err);
                if (received <= 0 || err != SocketError.Success)
                {
                    this.Disconnect();
                    return;
                }
                DataEventArgs data = new DataEventArgs(this, buffer, received);
                this.onDataReceived(this, data);
            }
            catch (Exception ex)
            {
                #if DEBUG
 #if DEBUG
 Console.WriteLine(ex.ToString()); 
#endif 
#endif
                this.Disconnect();
            }
        }