Upload and Download file through FTP in C#

FtpTransfer.cs

using System.Net;
using System.IO;


    // Upload File to Specified FTP Url with username and password and Upload Directory 
    //if need to upload in sub folders /// 
    //Base FtpUrl of FTP Server
    //Local Filename to Upload
    //Username of FTP Server
    //Password of FTP Server
    //[Optional]Specify sub Folder if any
    //Status String from Server
    public static string UploadFile(string FtpUrl, string fileName, string userName, string password,string
    UploadDirectory="")
    {
        string PureFileName = new FileInfo(fileName).Name;
        String uploadUrl = String.Format("{0}{1}/{2}", FtpUrl,UploadDirectory,PureFileName);
        FtpWebRequest req = (FtpWebRequest)FtpWebRequest.Create(uploadUrl);
        req.Proxy = null;
        req.Method = WebRequestMethods.Ftp.UploadFile;
        req.Credentials = new NetworkCredential(userName,password);
        req.UseBinary = true;
        req.UsePassive = true;
        byte[] data = File.ReadAllBytes(fileName);
        req.ContentLength = data.Length;
        Stream stream = req.GetRequestStream();
        stream.Write(data, 0, data.Length);
        stream.Close();
        FtpWebResponse res = (FtpWebResponse)req.GetResponse();
        return res.StatusDescription;
    }



    //Download File From FTP Server 
    //Base url of FTP Server
    //if file is in root then write FileName Only if is in use like "subdir1/subdir2/filename.ext"
    //Username of FTP Server
    //Password of FTP Server
    //Folderpath where you want to Download the File
    // Status String from Server
    public static string DownloadFile(string FtpUrl,string FileNameToDownload,
                        string userName, string password,string tempDirPath)
    {
        string ResponseDescription = "";
        string PureFileName = new FileInfo(FileNameToDownload).Name;
        string DownloadedFilePath  =  tempDirPath+"/"+PureFileName;
        string downloadUrl = String.Format("{0}/{1}", FtpUrl, FileNameToDownload);
        FtpWebRequest req = (FtpWebRequest)FtpWebRequest.Create(downloadUrl);
        req.Method = WebRequestMethods.Ftp.DownloadFile;
        req.Credentials = new NetworkCredential(userName, password);
        req.UseBinary = true;
        req.Proxy = null;
        try
        {
            FtpWebResponse response = (FtpWebResponse)req.GetResponse();
            Stream stream = response.GetResponseStream();
            byte[] buffer = new byte[2048];
            FileStream fs = new FileStream(DownloadedFilePath, FileMode.Create);
            int ReadCount = stream.Read(buffer, 0, buffer.Length);
            while (ReadCount > 0)
            {
                fs.Write(buffer, 0, ReadCount);
                ReadCount = stream.Read(buffer, 0, buffer.Length);
            }
            ResponseDescription = response.StatusDescription;
            fs.Close();
            stream.Close();
        }
        catch(Exception e)
        {
            Console.WriteLine(e.Message);
        }
        return ResponseDescription;
    }