simple ftp Transferring modified

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Net;
using System.Text;
using System.Threading.Tasks;
using System.Windows;

namespace ORFTPUpload.BusinessClass
{
    class ftp
    {
        private string host = null;
        private string user = null;
        private string pass = null;
        private FtpWebRequest ftpRequest = null;
        private FtpWebResponse ftpResponse = null;
        private Stream ftpStream = null;
        private int bufferSize = 2048;

        /* Construct Object */
        public ftp(string hostIP, string userName, string password) { host = hostIP; user = userName; pass = password; }

        /* Download File */
        public void download(string remoteFile, string localFile)
        {
            try
            {
                /* Create an FTP Request */
                ftpRequest = (FtpWebRequest)FtpWebRequest.Create(host + "/" + remoteFile);
                /* Log in to the FTP Server with the User Name and Password Provided */
                ftpRequest.Credentials = new NetworkCredential(user, pass);
                /* 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.DownloadFile;
                /* Establish Return Communication with the FTP Server */
                ftpResponse = (FtpWebResponse)ftpRequest.GetResponse();
                /* Get the FTP Server's Response Stream */
                ftpStream = ftpResponse.GetResponseStream();
                /* Open a File Stream to Write the Downloaded File */
                FileStream localFileStream = new FileStream(localFile, FileMode.Create);
                /* Buffer for the Downloaded Data */
                byte[] byteBuffer = new byte[bufferSize];
                int bytesRead = ftpStream.Read(byteBuffer, 0, bufferSize);
                /* Download the File by Writing the Buffered Data Until the Transfer is Complete */
                try
                {
                    while (bytesRead > 0)
                    {
                        localFileStream.Write(byteBuffer, 0, bytesRead);
                        bytesRead = ftpStream.Read(byteBuffer, 0, bufferSize);
                    }
                }
                catch (Exception ex) { Console.WriteLine(ex.ToString()); }
                /* Resource Cleanup */
                localFileStream.Close();
                ftpStream.Close();
                ftpResponse.Close();
                ftpRequest = null;
            }
            catch (Exception ex) { Console.WriteLine(ex.ToString()); }
            return;
        }

        /* Upload File */
        public void upload(string remoteFile, string localFile)
        {
            try
            {
                /* Create an FTP Request */
                ftpRequest = (FtpWebRequest)FtpWebRequest.Create(host + "/" + remoteFile);
                /* Log in to the FTP Server with the User Name and Password Provided */
                ftpRequest.Credentials = new NetworkCredential(user, pass);
                /* 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;
                /* Establish Return Communication with the FTP Server */
                ftpStream = ftpRequest.GetRequestStream();
                /* Open a File Stream to Read the File for Upload */
                FileStream localFileStream = new FileStream(localFile, FileMode.Open);
                /* Buffer for the Downloaded Data */
                byte[] byteBuffer = new byte[bufferSize];
                int bytesSent = localFileStream.Read(byteBuffer, 0, bufferSize);
                /* Upload the File by Sending the Buffered Data Until the Transfer is Complete */
                try
                {
                    while (bytesSent != 0)
                    {
                        ftpStream.Write(byteBuffer, 0, bytesSent);
                        bytesSent = localFileStream.Read(byteBuffer, 0, bufferSize);
                    }
                }
                catch (Exception ex) { Console.WriteLine(ex.ToString()); }
                /* Resource Cleanup */
                localFileStream.Close();
                ftpStream.Close();
                ftpRequest = null;
            }
            catch (Exception ex) { MessageBox.Show(ex.ToString()); }
            return;
        }

        /* Delete File */
        public void delete(string deleteFile)
        {
            try
            {
                /* Create an FTP Request */
                ftpRequest = (FtpWebRequest)WebRequest.Create(host + "/" + deleteFile);
                /* Log in to the FTP Server with the User Name and Password Provided */
                ftpRequest.Credentials = new NetworkCredential(user, pass);
                /* 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.DeleteFile;
                /* Establish Return Communication with the FTP Server */
                ftpResponse = (FtpWebResponse)ftpRequest.GetResponse();
                /* Resource Cleanup */
                ftpResponse.Close();
                ftpRequest = null;
            }
            catch (Exception ex) { Console.WriteLine(ex.ToString()); }
            return;
        }

        /* Rename File */
        public void rename(string currentFileNameAndPath, string newFileName)
        {
            try
            {
                /* Create an FTP Request */
                ftpRequest = (FtpWebRequest)WebRequest.Create(host + "/" + currentFileNameAndPath);
                /* Log in to the FTP Server with the User Name and Password Provided */
                ftpRequest.Credentials = new NetworkCredential(user, pass);
                /* 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.Rename;
                /* Rename the File */
                ftpRequest.RenameTo = newFileName;
                /* Establish Return Communication with the FTP Server */
                ftpResponse = (FtpWebResponse)ftpRequest.GetResponse();
                /* Resource Cleanup */
                ftpResponse.Close();
                ftpRequest = null;
            }
            catch (Exception ex) { Console.WriteLine(ex.ToString()); }
            return;
        }

        /* Create a New Directory on the FTP Server */
        public void createDirectory(string newDirectory)
        {
            try
            {
                /* Create an FTP Request */
                ftpRequest = (FtpWebRequest)WebRequest.Create(host + "/" + newDirectory);
                /* Log in to the FTP Server with the User Name and Password Provided */
                ftpRequest.Credentials = new NetworkCredential(user, pass);
                /* 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.MakeDirectory;
                /* Establish Return Communication with the FTP Server */
                ftpResponse = (FtpWebResponse)ftpRequest.GetResponse();
                /* Resource Cleanup */
                ftpResponse.Close();
                ftpRequest = null;
            }
            catch (Exception ex) { Console.WriteLine(ex.ToString()); }
            return;
        }

        /* Get the Date/Time a File was Created */
        public string getFileCreatedDateTime(string fileName)
        {
            try
            {
                /* Create an FTP Request */
                ftpRequest = (FtpWebRequest)FtpWebRequest.Create(host + "/" + fileName);
                /* Log in to the FTP Server with the User Name and Password Provided */
                ftpRequest.Credentials = new NetworkCredential(user, pass);
                /* 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.GetDateTimestamp;
                /* Establish Return Communication with the FTP Server */
                ftpResponse = (FtpWebResponse)ftpRequest.GetResponse();
                /* Establish Return Communication with the FTP Server */
                ftpStream = ftpResponse.GetResponseStream();
                /* Get the FTP Server's Response Stream */
                StreamReader ftpReader = new StreamReader(ftpStream);
                /* Store the Raw Response */
                string fileInfo = null;
                /* Read the Full Response Stream */
                try { fileInfo = ftpReader.ReadToEnd(); }
                catch (Exception ex) { Console.WriteLine(ex.ToString()); }
                /* Resource Cleanup */
                ftpReader.Close();
                ftpStream.Close();
                ftpResponse.Close();
                ftpRequest = null;
                /* Return File Created Date Time */
                return fileInfo;
            }
            catch (Exception ex) { Console.WriteLine(ex.ToString()); }
            /* Return an Empty string Array if an Exception Occurs */
            return "";
        }

        /* Get the Size of a File */
        public string getFileSize(string fileName)
        {
            try
            {
                /* Create an FTP Request */
                ftpRequest = (FtpWebRequest)FtpWebRequest.Create(host + "/" + fileName);
                /* Log in to the FTP Server with the User Name and Password Provided */
                ftpRequest.Credentials = new NetworkCredential(user, pass);
                /* 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.GetFileSize;
                /* Establish Return Communication with the FTP Server */
                ftpResponse = (FtpWebResponse)ftpRequest.GetResponse();
                /* Establish Return Communication with the FTP Server */
                ftpStream = ftpResponse.GetResponseStream();
                /* Get the FTP Server's Response Stream */
                StreamReader ftpReader = new StreamReader(ftpStream);
                /* Store the Raw Response */
                string fileInfo = null;
                /* Read the Full Response Stream */
                try { while (ftpReader.Peek() != -1) { fileInfo = ftpReader.ReadToEnd(); } }
                catch (Exception ex) { Console.WriteLine(ex.ToString()); }
                /* Resource Cleanup */
                ftpReader.Close();
                ftpStream.Close();
                ftpResponse.Close();
                ftpRequest = null;
                /* Return File Size */
                return fileInfo;
            }
            catch (Exception ex) { Console.WriteLine(ex.ToString()); }
            /* Return an Empty string Array if an Exception Occurs */
            return "";
        }

        /* List Directory Contents File/Folder Name Only */
        public List<string> getdirectoryContentSimple(string directory)
        {
            try
            {
                List<string> filesfromFTP = new List<string>();

                string line = string.Empty;
                string data = string.Empty;

                FtpWebRequest request = (FtpWebRequest)WebRequest.Create(host + "/" + directory);
                request.Method = WebRequestMethods.Ftp.ListDirectory;

                // This example assumes the FTP site uses anonymous logon.
                request.Credentials = new NetworkCredential(user, pass);

                FtpWebResponse response = (FtpWebResponse)request.GetResponse();

                //    Stream responseStream = response.GetResponseStream();
                //StreamReader reader = new StreamReader(responseStream);
                using (Stream responseStream = response.GetResponseStream())
                {
                    using (StreamReader reader = new StreamReader(responseStream))
                    {
                        line = reader.ReadLine();

                        while (line != null)
                        {
                            filesfromFTP.Add(line);
                            line = reader.ReadLine();
                        }
                    }
                }


                foreach (var filename in filesfromFTP)
                {
                    data += filename + ", ";
                }
                Console.WriteLine(data);

                Console.WriteLine("Directory List Complete, status {0}", response.StatusDescription);


                return filesfromFTP;

            }

            catch (Exception ex)
            {
                MessageBox.Show("Cannot get ftp server listing. Contact admin");

                return null;
            }
        }

        //get detailed content of directory
        public List<string> getdirectoryContentDetailed(string directory)
        {
            try
            {
                List<string> filesfromFTP = new List<string>();

                string line = string.Empty;
                string data = string.Empty;

                FtpWebRequest request = (FtpWebRequest)WebRequest.Create(host + "/" + directory);
                request.Method = WebRequestMethods.Ftp.ListDirectoryDetails;

                // This example assumes the FTP site uses anonymous logon.
                request.Credentials = new NetworkCredential(user, pass);

                FtpWebResponse response = (FtpWebResponse)request.GetResponse();

                //    Stream responseStream = response.GetResponseStream();
                //StreamReader reader = new StreamReader(responseStream);
                using (Stream responseStream = response.GetResponseStream())
                {
                    using (StreamReader reader = new StreamReader(responseStream))
                    {
                        line = reader.ReadLine();

                        while (line != null)
                        {
                            filesfromFTP.Add(line);
                            line = reader.ReadLine();
                        }
                    }
                }

                foreach (var filename in filesfromFTP)
                {
                    data += filename + ", ";
                }
                Console.WriteLine(data);

                Console.WriteLine("Directory List Complete, status {0}", response.StatusDescription);


                return filesfromFTP;

            }

            catch (Exception ex)
            {
                MessageBox.Show("Cannot get detail ftp server listing. Contact admin");

                return null;
            }
        }
    }
}