How to create file sharing desktop application with c#?

you can use TCP client to connect to other pc using their Ip address and port no

private void btnSend_Click(object sender, EventArgs e)
{
string ipAddress = txtIPAddress.Text;
int port = int.Parse(txtPort.Text);
string fileName = txtFile.Text;
Task.Factory.StartNew(() => SendFile(ipAddress,port,
fileName,shortFileName));
MessageBox.Show("File Sent");
}
public void SendFile(string remoteHostIP, int remoteHostPort
, string longFileName, string shortFileName)
{
try
{
if(!string.IsNullOrEmpty(remoteHostIP))
{
byte[] fileNameByte = Encoding.ASCII.GetBytes
(shortFileName); byte[] fileData =
File.ReadAllBytes(longFileName);
byte[] clientData
= new byte[4 + fileNameByte.Length
+ fileData.Length];
byte[] fileNameLen = BitConverter.GetBytes(
fileNameByte.Length);
fileNameLen.CopyTo(clientData, 0);
fileNameByte.CopyTo(clientData,4);
fileData.CopyTo(clientData, 4 + fileNameByte.Length);
TcpClient clientSocket = new TcpClient(remoteHostIP,
remoteHostPort);
NetworkStream networkStream = clientSocket.GetStream();
networkStream.Write(clientData,
0, clientData.GetLength
(0)); networkStream.Close(); }
}
catch
{
}
}
}

3 Replies

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Sachin Singh5y ago
Accepted answer
you can use TCP client to connect to other pc using their Ip address and port no
private void btnSend_Click(object sender, EventArgs e)
        {
            string ipAddress = txtIPAddress.Text;
            int port = int.Parse(txtPort.Text);
            string fileName = txtFile.Text;
            Task.Factory.StartNew(() => SendFile(ipAddress,port,

             fileName,shortFileName));
            MessageBox.Show("File Sent");
        }

        public void SendFile(string remoteHostIP, int remoteHostPort

           , string  longFileName, string shortFileName)
        {
         try
         {
          if(!string.IsNullOrEmpty(remoteHostIP))

          {

            byte[] fileNameByte = Encoding.ASCII.GetBytes

             (shortFileName); byte[] fileData =

              File.ReadAllBytes(longFileName);

             byte[] clientData
                 = new byte[4 + fileNameByte.Length

                + fileData.Length];

             byte[] fileNameLen = BitConverter.GetBytes(

              fileNameByte.Length);

             fileNameLen.CopyTo(clientData, 0);

             fileNameByte.CopyTo(clientData,4);

             fileData.CopyTo(clientData, 4 + fileNameByte.Length);

            TcpClient clientSocket = new TcpClient(remoteHostIP,

           remoteHostPort);

             NetworkStream networkStream = clientSocket.GetStream();

          networkStream.Write(clientData,
                  0, clientData.GetLength

              (0)); networkStream.Close(); }
         }
         catch
         {

         }
        }
    }
Rajanikant Hawaldar5y ago
https://www.c-sharpcorner.com/uploadfile/0a7dc8/file-transfer-program-using-C-Sharp-net-windows-application/
Amit Gupta5y ago
Each pc is identified by an IP address, a file can be copied using File.Copy(..) function. You just need to design fancy stuffs as per your need