File Upload to FTP server

private FtpWebRequest ftpRequest = null;
            private Stream ftpStream = null;
            private int bufferSize = 2048;

protected void btnSubmit_Click(object sender, EventArgs e)
        {            
            byte[] byteBuffer = new byte[bufferSize];
            byte[] Data = fileArray.FileBytes;
           TransferFile(fileArray.PostedFile.FileName, Data));
        }

public string TransferFile(string filename, byte[] fileContent)
        {
            

            string strMsg = string.Empty;
            try
            {

                /* Create an FTP Request */
                String uploadUrl = String.Format("{0}/{1}/{2}", "ftp://address", "foldername", filename);
                ftpRequest = (FtpWebRequest)FtpWebRequest.Create(new Uri(uploadUrl));
                /* Log in to the FTP Server with the User Name and Password Provided */
                ftpRequest.Credentials = new NetworkCredential("Username", "Password");
                /* When in doubt, use these options */
                ftpRequest.UseBinary = true;
                ftpRequest.UsePassive = true;
                ftpRequest.KeepAlive = true;
                /* Specify the Type of FTP Request */
                ftpRequest.Method = WebRequestMethods.Ftp.UploadFile;
                
                ftpStream = ftpRequest.GetRequestStream();                

                
                /* Upload the File by Sending the Buffered Data Until the Transfer is Complete */
                try
                {
                    
                    ftpRequest.ContentLength = fileContent.Length;

                    Stream requestStream = ftpRequest.GetRequestStream();
                    requestStream.Write(fileContent, 0, fileContent.Length);
                    requestStream.Close();
                    
                    FtpWebResponse response = (FtpWebResponse)ftpRequest.GetResponse();
                    strMsg = "File Upload Status: " + response.ToString();

                }
                catch (Exception ex) { Console.WriteLine(ex.ToString()); }
                /* Resource Cleanup */
                ftpStream.Close();
                ftpRequest = null;
            }
            catch (Exception ex) { Console.WriteLine(ex.ToString()); }
            return strMsg;

        }