Skip to content
  • Categories
  • Recent
  • Tags
  • Popular
  • World
  • Users
  • Groups
Skins
  • Light
  • Cerulean
  • Cosmo
  • Flatly
  • Journal
  • Litera
  • Lumen
  • Lux
  • Materia
  • Minty
  • Morph
  • Pulse
  • Sandstone
  • Simplex
  • Sketchy
  • Spacelab
  • United
  • Yeti
  • Zephyr
  • Dark
  • Cyborg
  • Darkly
  • Quartz
  • Slate
  • Solar
  • Superhero
  • Vapor

  • Default (No Skin)
  • No Skin
Collapse
Code Project
  1. Home
  2. General Programming
  3. C#
  4. How do I transfer files over a local network?

How do I transfer files over a local network?

Scheduled Pinned Locked Moved C#
sysadminquestionhelptutoriallearning
16 Posts 10 Posters 1 Views 1 Watching
  • Oldest to Newest
  • Newest to Oldest
  • Most Votes
Reply
  • Reply as topic
Log in to reply
This topic has been deleted. Only users with topic management privileges can see it.
  • L Luc Pattyn

    Megidolaon wrote:

    int data = 0; while (data > 0) ...

    and how many iterations will this loop execute in your opinion? :doh:

    Luc Pattyn [Forum Guidelines] [Why QA sucks] [My Articles] Nil Volentibus Arduum

    Please use <PRE> tags for code snippets, they preserve indentation, improve readability, and make me actually look at the code.

    K Offline
    K Offline
    Keith Barrow
    wrote on last edited by
    #7

    I'll give him a clue: it's the same value as data. Lets see if he cracks the code :-)

    Sort of a cross between Lawrence of Arabia and Dilbert.[^]
    -Or-
    A Dead ringer for Kate Winslett[^]

    1 Reply Last reply
    0
    • M Megidolaon

      ...what? All you did is provide some vague comments that are unusable and post code that does exactly the same thing as mine.

      F Offline
      F Offline
      fjdiewornncalwe
      wrote on last edited by
      #8

      My vote of 1... Try doing a bit of the thinking yourself. He provided you exactly what you need to get it going. All you have to do is follow instructions.

      I wasn't, now I am, then I won't be anymore.

      1 Reply Last reply
      0
      • M Megidolaon

        ...what? All you did is provide some vague comments that are unusable and post code that does exactly the same thing as mine.

        P Offline
        P Offline
        Pete OHanlon
        wrote on last edited by
        #9

        All you did was provide code that couldn't possibly work. Luc provided reasons why, and a practical suggestion on how to take your code forwards. Luc's comments were valid, pertinent and usable - if you think his code does the same as yours, I suggest that you need to step through the code line by line. BTW - had you actually bothered to debug your application, you'd have spotted that you could never step into the loop.

        I'm not a stalker, I just know things. Oh by the way, you're out of milk.

        Forgive your enemies - it messes with their heads

        My blog | My articles | MoXAML PowerToys | Onyx

        1 Reply Last reply
        0
        • M Megidolaon

          ...what? All you did is provide some vague comments that are unusable and post code that does exactly the same thing as mine.

          L Offline
          L Offline
          Lost User
          wrote on last edited by
          #10

          Megidolaon wrote:

          and post code that does exactly the same thing as mine.

          With one major difference, your code will never work, Luc's always will.

          Just say 'NO' to evaluated arguments for diadic functions! Ash

          D 1 Reply Last reply
          0
          • L Lost User

            Megidolaon wrote:

            and post code that does exactly the same thing as mine.

            With one major difference, your code will never work, Luc's always will.

            Just say 'NO' to evaluated arguments for diadic functions! Ash

            D Online
            D Online
            dan sh
            wrote on last edited by
            #11

            Signature material. Hijacked. :)

            "Your code will never work, Luc's always will.", Richard MacCutchan[^]

            L 1 Reply Last reply
            0
            • D dan sh

              Signature material. Hijacked. :)

              "Your code will never work, Luc's always will.", Richard MacCutchan[^]

              L Offline
              L Offline
              Lost User
              wrote on last edited by
              #12

              :thumbsup: Fame at last! :cool:

              Just say 'NO' to evaluated arguments for diadic functions! Ash

              1 Reply Last reply
              0
              • M Megidolaon

                ...what? All you did is provide some vague comments that are unusable and post code that does exactly the same thing as mine.

                _ Offline
                _ Offline
                _Erik_
                wrote on last edited by
                #13

                I have a question here: Do you want somebody to do your job or do you want to learn? If you want somebody to do your job, then look for a professional, ask him to do the job and pay him for it. If you want to learn then read again Luc's answer and try to apply his advices. Additionally, you might say "Thank you for your time" or nothing at all, but this kind of reply is a great invitation to blacklist you and do never answer any other of your questions.

                1 Reply Last reply
                0
                • M Megidolaon

                  I've tried a ton of tutorials but none work. Or rather, sooner or later ALL digress and leave the crucial part of transfering a file that isn't pure text. I'm remodeling an app I've previously used to transfer text and project specific objects over a LAN. I'm just having trouble to receive the file and save it again after the transfer (I assume the sending of the file is successful, but of course have no way to actually verify this). Here is the code for my client (sending) app:

                      private void Send(string arg)
                      {
                          TcpClient client = new TcpClient(TB\_Host.Text, (int)UD\_Port.Value);
                          FileStream fstream = File.Open(OFD\_File.FileName, FileMode.Open);
                          NetworkStream nstream = client.GetStream();
                          int data = 0;
                  
                          while (data > 0)
                          {
                              data = fstream.ReadByte();
                              nstream.WriteByte((byte)data);
                          }
                  
                          fstream.Close();
                          nstream.Close();
                          client.Close();
                      }
                  

                  And this is the code for the server (receiving) app:

                  public void Listen()
                  {
                  int port = 21112;
                  byte[] result = new byte[1024];
                  IPAddress address = IPAddress.Parse("127.0.0.1");
                  TcpListener listener = new TcpListener(address, port);
                  ipEnd = new IPEndPoint(address, port);
                  listener.Start();
                  socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
                  int f = 0;
                  object state = new object();
                  socket.Connect(ipEnd);

                          while (true)
                          {
                              TcpClient client = listener.AcceptTcpClient();
                              NetworkStream ns = client.GetStream();
                  
                              f = socket.Receive(result);
                              Invoke(new UpdateDisplayDelegate(UpdateDisplay), result);
                          }
                      }
                  

                  The current problem is that the code never reaches the invoke call (the Listen method is on a 2nd thread), which confuses me as there never had been any problem when I transferred text or objects. I tried a SoapFormatter, but while it works great for text and objects, I can't get it to work for files. I also tried using no sockets but a NetworkStream to write into the buffer:

                  result = ns.Write(result, 0, int.MaxValue);

                  but I always get an ArgumentOutOfRange exception for the size (I used int.MaxValue) parameter. Can you tell me how to

                  J Offline
                  J Offline
                  jschell
                  wrote on last edited by
                  #14

                  Megidolaon wrote:

                  Or is this approach wrong in the first place?

                  As you said it is a local network so why not just use the OS to do the transfer? And if there is some security reason for that then just set up a ftp server and client.

                  1 Reply Last reply
                  0
                  • K Keith Barrow

                    ... What? All he did was provide a good critique that you should learn from and some code that has more than a snowball's chance of working.

                    Sort of a cross between Lawrence of Arabia and Dilbert.[^]
                    -Or-
                    A Dead ringer for Kate Winslett[^]

                    M Offline
                    M Offline
                    Megidolaon
                    wrote on last edited by
                    #15

                    Critique? I did not ask for critique, I asked for help. Which he pretended he gave, but actually did not give at all.

                    K 1 Reply Last reply
                    0
                    • M Megidolaon

                      Critique? I did not ask for critique, I asked for help. Which he pretended he gave, but actually did not give at all.

                      K Offline
                      K Offline
                      Keith Barrow
                      wrote on last edited by
                      #16

                      Look, if you aren't up to working out what he said, that's your problem. The answer he have was helpful: Your code couldn't possibly run, was inefficient and poorly designed. He covered each of those points. He even gave you a sample of code that fixes those problems. I suggest you read the other comments and figure out why you are wrong, rather than attempting flip answers.

                      Sort of a cross between Lawrence of Arabia and Dilbert.[^]
                      -Or-
                      A Dead ringer for Kate Winslett[^]

                      1 Reply Last reply
                      0
                      Reply
                      • Reply as topic
                      Log in to reply
                      • Oldest to Newest
                      • Newest to Oldest
                      • Most Votes


                      • Login

                      • Don't have an account? Register

                      • Login or register to search.
                      • First post
                        Last post
                      0
                      • Categories
                      • Recent
                      • Tags
                      • Popular
                      • World
                      • Users
                      • Groups