C# FAQs Series: How Use FTP Using C#

àIn C# FAQs Series: We discuss most frequent questions asked on C# forums.

As a C# developer you may often have to use FTP. Following is simple program which will demonstrate how to FTP using C#.

using System;

using System.IO;

using System.Net;

using System.Text;

namespace Examples.System.Net

{

public class WebRequestGetExample

{

public static void Main ()

{

// Geting the object used to communicate with the server.

FtpWebRequest FWRrequest = (FtpWebRequest)WebRequest.Create( "ftp://www.mrmubi.com/mytest.htm");

request.Method = WebRequestMethods.Ftp.UploadFile;

// Set network credentials.

FWRrequest.Credentials = new NetworkCredential ("user","password");

// Copy the contents of the file to the request stream.

StreamReader sourceStream = new StreamReader("myfile.txt");

byte [] fileContents = Encoding.UTF8.GetBytes(sourceStream.ReadToEnd());

sourceStream.Close();

FWRrequest.ContentLength = fileContents.Length;

Stream requestStream = FWRrequest.GetRequestStream();

requestStream.Write(fileContents, 0, fileContents.Length);

requestStream.Close();

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

Console.WriteLine("File upload complete , status {0}", response.StatusDescription);

response.Close();

}

}

}

}

How to download file using FTP in C#...

public static bool DisplayFileFromServer(Uri serverUri)

{

    // The serverUri parameter should start with the ftp:// scheme.

    if (serverUri.Scheme != Uri.UriSchemeFtp)

    {

        return false;

    }

    // Geting the object used to communicate with the server.

    WebClient WCrequest = new WebClient();

    // Credentials

    WCrequest.Credentials = new NetworkCredential ("user","password");

    try 

    {

        byte [] newFileData = WCrequest.DownloadData (serverUri.ToString());

        string fileString = System.Text.Encoding.UTF8.GetString(newFileData);

        Console.WriteLine(fileString);

    }

    catch (WebException e)

    {

        Console.WriteLine(e.ToString());

    }

    return true;

}

How to delete file using FTP in C#...

public static bool DeleteFileOnServer(Uri serverUri)

{

    // The serverUri parameter should use the ftp:// scheme.

    // It contains the name of the server file that is to be deleted.

    // Example: ftp://contoso.com/someFile.txt.

    // 

    if (serverUri.Scheme != Uri.UriSchemeFtp)

    {

        return false;

    }

    // Get the object used to communicate with the server.

    FtpWebRequest FWRrequest = (FtpWebRequest)WebRequest.Create(serverUri);

    FWRrequest.Method = WebRequestMethods.Ftp.DeleteFile;

    FtpWebResponse FWRresponse = (FtpWebResponse) FWRrequest.GetResponse();

    Console.WriteLine("File delete status: {0}",FWRresponse.StatusDescription);  

    FWRresponse.Close();

    return true;

}

You see how easy is it to play with your FTP account in C#.