如何使用C＃将文件从一台计算机发送到另一台计算机 [英] How to send a file from one computer to another computer using C#

问题描述

我正在编写代码，用于将一个文件从一台计算机传输到另一台计算机，在我的情况下，我能够在单个系统中传输文件客户端和服务器，但我无法在两个不同的系统之间进行。

请帮我解决这个问题，





提前致谢。



我尝试了什么：



服务器：

  private   void  Form1_Load（ object  sender，EventArgs e）
 {
  //   IPHostEntry IPHost = Dns.GetHostByName（Dns.GetHostName（））;  
  //   lbl_Status.Text =我的IP地址是+ IPHost.AddressList [0] .ToString（ ）;  
 nSockets =  new  ArrayList（）; 
 Thread thdListener =  new 线程（ new  ThreadStart（ListenerThread））; 
 thdListener.Start（）; 
} 
 
  public   void  ListenerThread（）
 {
 TcpListener tcpListener =  new  TcpListener（IPAddress.Parse（GetIp（））， 8080 ） ; 
 tcpListener.Start（）; 
 
  while （ true ）
 {
 Socket handlerSocket = tcpListener.AcceptSocket（）; 
  //   TcpClient client = tcpListener.AcceptTcpClient（）;  
  //   MessageBox.Show（client.Client.RemoteEndPoint +。）;  
  if （handlerSocket.Connected）
 {
 lb_Connections.Invoke（（MethodInvoker） delegate  
 {
  //   btn_SaveFile.PerformClick（）;  
 saveFileDialog_Server.ShowDialog（ ）; 
 txt_SaveFile_Location.Text = saveFileDialog_Server.FileName; 
 lb_Connections.Items.Add（handlerSocket.RemoteEndPoint.ToString（）+  已连接。）; 
 }）; 
 
  lock （ this ）
 {
 nSockets 。新增（HandlerSocket的）; 
} 
 ThreadStart thdstHandler =  new  ThreadStart（handlerThread）; 
 Thread thdHandler =  new  Thread（thdstHandler）; 
 thdHandler.Start（）; 
} 
} 
} 
  public   void  handlerThread （）
 {
套接字handlerSocket =（套接字）nSockets [nSockets.Count  -   1 ]; 
 NetworkStream networkStream =  new  NetworkStream（handlerSocket）; 
  int  thisRead =  0 ; 
  int  blockSize =  1024 ; 
 字节 [] dataByte =  new  字节< /跨度> [BLOCKSIZE]; 
  lock （此）
 {
  //  只有一个流程可以访问 
  //  任何给定时间的同一文件 
流fileStream = File.OpenWrite（txt_SaveFile_Location.Text）; 
  while （ true ）
 {
 thisRead = networkStream.Read （dataByte， 0 ，blockSize）; 
 fileStream.Write（dataByte， 0 ，thisRead）; 
  if （thisRead ==  0 ） break ; 
} 
 fileStream.Close（）; 
} 
 
 lb_Connections.Invoke（（MethodInvoker）委托 
 {
 lb_Connections.Items.Add（  写入文件）; 
}）; 
 
 handlerSocket =  null ; 
} 
  public   string  GetIp（）
 {
  string  name = Dns.GetHostName（）; 
 IPHostEntry entry = Dns.GetHostEntry（name）; 
 IPAddress [] addr = entry.AddressList; 
  if （addr [ 1 ]。ToString（）。Split（' 。'）。长度==  4 ）
 {
  return  addr [ 1 ]。ToString（）; 
} 
  return  addr [ 2 ]。ToString（）; 
} 

客户：

  private   void  button1_Click（ object  sender，EventArgs e）
 {
 DialogResult dialogResult = folderBrowserDialog_openFiles.ShowDialog（）; 
 txt_OpenFiles.Text = folderBrowserDialog_openFiles.SelectedPath; 
 filepath = txt_OpenFiles.Text; 
} 
 
  private   void  button2_Click（ object  sender，EventArgs e）
 {
  try  
 {
 saveFileDialog_zip。 Filter =  @  Zip文件（.zip）| * .zip |所有文件（*。*）| *。* ; 
 DialogResult dr = saveFileDialog_zip.ShowDialog（）; 
 saveFile = saveFileDialog_zip.FileName; 
 fileName = saveFile; 
 ZipFile.CreateFromDirectory（filepath，fileName）; 
 MessageBox.Show（ 在保存位置创建的Zip文件）; 
} 
 
  catch （异常异常）
 {
 MessageBox.Show（ 未创建Zip文件）; 
} 
} 
 
  private   void  btn_Browse_Zip_Click（  object  sender，EventArgs e）
 {
 
 DialogResult drbrowse_zip = openFileDialog_OpenZip.ShowDialog（）; 
 openFileDialog_OpenZip.Filter =   Zip文件（.zip）| * .zip |所有文件（*。* ）| *。*; 
 openFileDialog_OpenZip.FilterIndex =  1 ; 
  if （drbrowse_zip == System.Windows.Forms.DialogResult.OK）
 {
 txt_BrowseZip.Text = openFileDialog_OpenZip.FileName; 
} 
} 
 
  private   void  btn_Transfer_Click（  object  sender，EventArgs e）
 {
 
 Stream fileStream = File.OpenRead（txt_BrowseZip.Text）; 
  //  为文件分配内存空间 
  byte  [] fileBuffer =  new   byte  [fileStream.Length]; 
 fileStream.Read（fileBuffer， 0 ，（ int ）fileStream.Length）; 
  //  打开TCP / IP连接并发送数据 
 TcpClient clientSocket =  new  TcpClient（txt_Server.Text， 8080 ）; 
 NetworkStream networkStream = clientSocket.GetStream（）; 
 networkStream.Write（fileBuffer， 0 ，fileBuffer.GetLength（ 0 ））; 
 networkStream.Close（）; 
} 
 

解决方案

你可以尝试使用ftp



使用C＃.Net 2.0的简单FTP演示应用程序 [ ^

i am writing code for to transfer one file from one computer to another computer, in my case i am able to transfer file client and server in single system,but i am not able do for between two different systems.
Please help me to resolve this issue,


Thanks in advance.

What I have tried:

Server:

private void Form1_Load(object sender, EventArgs e)
        {
            //IPHostEntry IPHost = Dns.GetHostByName(Dns.GetHostName());
            //lbl_Status.Text = "My IP address is " + IPHost.AddressList[0].ToString();
            nSockets = new ArrayList();
            Thread thdListener = new Thread(new ThreadStart(ListenerThread));
            thdListener.Start();
        }

        public void ListenerThread()
        {
            TcpListener tcpListener = new TcpListener(IPAddress.Parse(GetIp()),8080);
            tcpListener.Start();
           
            while (true)
            {
                Socket handlerSocket = tcpListener.AcceptSocket();
                //TcpClient client = tcpListener.AcceptTcpClient();
                //MessageBox.Show(client.Client.RemoteEndPoint + ".");
                if (handlerSocket.Connected)
                {  
                    lb_Connections.Invoke((MethodInvoker)delegate 
                    {
                        //btn_SaveFile.PerformClick();
                        saveFileDialog_Server.ShowDialog();
                        txt_SaveFile_Location.Text = saveFileDialog_Server.FileName;
                        lb_Connections.Items.Add(handlerSocket.RemoteEndPoint.ToString() + " connected.");
                    });
                        
                    lock (this)
                    {
                        nSockets.Add(handlerSocket);
                    }
                    ThreadStart thdstHandler = new ThreadStart(handlerThread);
                    Thread thdHandler = new Thread(thdstHandler);
                    thdHandler.Start();
                }
            }
        }
        public void handlerThread()
        {
            Socket handlerSocket = (Socket)nSockets[nSockets.Count - 1];
            NetworkStream networkStream = new NetworkStream(handlerSocket);
            int thisRead = 0;
            int blockSize = 1024;
            Byte[] dataByte = new Byte[blockSize];
            lock (this)
            {
                // Only one process can access
                // the same file at any given time
                 Stream fileStream = File.OpenWrite(txt_SaveFile_Location.Text);
                while (true)
                {
                    thisRead = networkStream.Read(dataByte, 0, blockSize);
                    fileStream.Write(dataByte, 0, thisRead);
                    if (thisRead == 0) break;
                }
                fileStream.Close();
            }

            lb_Connections.Invoke((MethodInvoker)delegate
            {
                lb_Connections.Items.Add("File Written");
            });
            
            handlerSocket = null;
        }
        public string GetIp()
        {
            string name = Dns.GetHostName();
            IPHostEntry entry = Dns.GetHostEntry(name);
            IPAddress[] addr = entry.AddressList;
            if (addr[1].ToString().Split('.').Length == 4)
            {
                return addr[1].ToString();
            }
            return addr[2].ToString();
        }

Client:

private void button1_Click(object sender, EventArgs e)
       {
           DialogResult dialogResult =folderBrowserDialog_openFiles.ShowDialog();
           txt_OpenFiles.Text = folderBrowserDialog_openFiles.SelectedPath;
           filepath = txt_OpenFiles.Text;
       }

       private void button2_Click(object sender, EventArgs e)
       {
           try
           {
               saveFileDialog_zip.Filter = @"Zip Files (.zip) | *.zip | All Files(*.*) | *.*";
               DialogResult dr = saveFileDialog_zip.ShowDialog();
               saveFile = saveFileDialog_zip.FileName;
               fileName = saveFile;
               ZipFile.CreateFromDirectory(filepath, fileName);
               MessageBox.Show("Zip File Created at your Saved Location");
           }

           catch (Exception exception)
           {
               MessageBox.Show("Zip file not created");
           }
       }

       private void btn_Browse_Zip_Click(object sender, EventArgs e)
       {

           DialogResult drbrowse_zip=openFileDialog_OpenZip.ShowDialog();
           openFileDialog_OpenZip.Filter = "Zip Files (.zip) | *.zip | All Files(*.*) | *.*";
           openFileDialog_OpenZip.FilterIndex = 1;
           if (drbrowse_zip == System.Windows.Forms.DialogResult.OK)
           {
                   txt_BrowseZip.Text = openFileDialog_OpenZip.FileName;
           }
       }

       private void btn_Transfer_Click(object sender, EventArgs e)
       {

           Stream fileStream = File.OpenRead(txt_BrowseZip.Text);
           // Alocate memory space for the file
           byte[] fileBuffer = new byte[fileStream.Length];
           fileStream.Read(fileBuffer, 0, (int)fileStream.Length);
           // Open a TCP/IP Connection and send the data
           TcpClient clientSocket=new TcpClient(txt_Server.Text,8080);
           NetworkStream networkStream = clientSocket.GetStream();
           networkStream.Write(fileBuffer, 0, fileBuffer.GetLength(0));
           networkStream.Close();
       }

解决方案

You can try with ftp

Simple FTP demo application using C#.Net 2.0[^]

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