How to Upload And Download a File Using FTP in C# .net

To Upload a file on FTP design a windows form like below:

We can upload and download a file on FTP using System.Net. FtpWebRequest and System.Net. FtpWebResponse  class,

To upload we can call this property:

request.Method = WebRequestMethods.Ftp.UploadFile;

To Download we can call this property:

 request.Method = WebRequestMethods.Ftp.DownloadFile;

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Net;
using System.IO;

namespace UploadDownloadFTP
{
    public partial class frmUpload : Form
    {
        public frmUpload()
        {
            InitializeComponent();
        }

        private void frmUpload_Load(object sender, EventArgs e)
        {

        }

        private void btnBrows_Click(object sender, EventArgs e)
        {
            if (openFileDialog1.ShowDialog() == DialogResult.OK)
            {
                txtFilePath.Text = openFileDialog1.FileName;
            }
        }

        private void btnUpload_Click(object sender, EventArgs e)
        {
            FtpWebRequest request = (FtpWebRequest)WebRequest.Create("ftp://www.website.com/test.htm");
            request.Method = WebRequestMethods.Ftp.UploadFile;

            // This example assumes the FTP site uses anonymous logon.
            request.Credentials = new NetworkCredential("anonymous", "naveenranjan@gmail.com");

            // Copy the contents of the file to the request stream.
            StreamReader sourceStream = new StreamReader(txtFilePath.Text);
            byte[] fileContents = Encoding.UTF8.GetBytes(sourceStream.ReadToEnd());
            sourceStream.Close();
            request.ContentLength = fileContents.Length;

            Stream requestStream = request.GetRequestStream();
            requestStream.Write(fileContents, 0, fileContents.Length);
            requestStream.Close();

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

           lblUploadStatus.Text= "Upload File Complete status: " + response.StatusDescription;

            response.Close();
        }

     
    }
}

To Download a File from FTP, Design a windows form as given below:

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.IO;
using System.Net;

namespace UploadDownloadFTP
{
    public partial class Form2 : Form
    {
        public Form2()
        {
            InitializeComponent();
        }

        private void btnBrows_Click(object sender, EventArgs e)
        {
            if (saveFileDialog1.ShowDialog() == DialogResult.OK)
            {
                // Get the object used to communicate with the server.
                FtpWebRequest request = (FtpWebRequest)WebRequest.Create("ftp://www.website.com/test.htm");
                request.Method = WebRequestMethods.Ftp.DownloadFile;

                // This example assumes the FTP site uses anonymous logon.
                request.Credentials = new NetworkCredential("anonymous", "naveenranjan@gmail.com");

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

                Stream responseStream = response.GetResponseStream();
                StreamReader reader = new StreamReader(responseStream);
                Console.WriteLine(reader.ReadToEnd());

                lblDownloadStatus.Text = "Download Complete, status "+ response.StatusDescription;

                reader.Close();
                response.Close();
            }
        }
    }
}