客户端部门，一个选择文件的按钮
一个提示lable
一个时钟控件：
代码部门如下，
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Net;
using System.Net.Sockets;
using System.IO;
//That code is written by Suman Biswas, Calcutta, India (Email: sumanbiswas@aol.in,Website: sumanbiswas.xm.com).
//That code is running to transfer small file to client to server. by using and after doing modification any one
//can able to make a large file transfer application in C#.Net. This is Client code.
namespace FTClientCode
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
FileDialog fDg = new OpenFileDialog();
if (fDg.ShowDialog() == DialogResult.OK)
{
FTClientCode.SendFile(fDg.FileName);
}
}
private void timer1_Tick(object sender, EventArgs e)
{
label3.Text = FTClientCode.curMsg;
}
}
//FILE TRANSFER USING C#.NET SOCKET - CLIENT
class FTClientCode
{
public static string curMsg = "Idle";
public static void SendFile(string fileName)
{
try
{
IPAddress[] ipAddress = Dns.GetHostAddresses("localhost");
IPEndPoint ipEnd = new IPEndPoint(ipAddress[0], 5656);
Socket clientSock = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.IP);
string filePath = "";
fileName = fileName.Replace("\", "/");
while (fileName.IndexOf("/") > -1)
{
filePath += fileName.Substring(0, fileName.IndexOf("/") + 1);
fileName = fileName.Substring(fileName.IndexOf("/") + 1);
}
//byte[] fileNameByte = Encoding.ASCII.GetBytes(fileName);
byte[] fileNameByte = Encoding.GetEncoding("GB2312").GetBytes(fileName);
if (fileNameByte.Length > 850 * 1024)
{
curMsg = "File size is more than 850kb, please try with small file.";
return;
}
curMsg = "Buffering ...";
byte[] fileData = File.ReadAllBytes(filePath + fileName);
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);
curMsg = "Connection to server ...";
clientSock.Connect(ipEnd);//建立与远程主机的连接
curMsg = "File sending...";
clientSock.Send(clientData);
curMsg = "Disconnecting...";
clientSock.Close();
curMsg = "File transferred.";
}
catch (Exception ex)
{
if(ex.Message=="No connection could be made because the target machine actively refused it")
curMsg="File Sending fail. Because server not running." ;
else
curMsg = "File Sending fail." + ex.Message;
}
}
}
}
服务器端：
一个选择存放接收到文件的路径按钮，
一个开始接收文件的按钮
一个时钟
一个backgroundWorker1控件
解决了传输文件不能是汉语的问题。
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Net;
using System.Net.Sockets;
using System.IO;
//That code is written by Suman Biswas, Calcutta, India (Email: sumanbiswas@aol.in,Website: sumanbiswas.xm.com).
//That code is running to transfer small file to client to server. by using and after doing modification any one
//can able to make a large file transfer application in C#.Net. This is Server code.
namespace FTServerCode
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
FTServerCode.receivedPath = "";
}
private void button1_Click(object sender, EventArgs e)
{
if (FTServerCode.receivedPath.Length > 0)
backgroundWorker1.RunWorkerAsync();//开始执行后台操作
else
MessageBox.Show("Please select file receiving path");
}
private void timer1_Tick(object sender, EventArgs e)
{
label5.Text = FTServerCode.receivedPath;
label3.Text = FTServerCode.curMsg;
}
FTServerCode obj = new FTServerCode();
private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
{
obj.StartServer();
}
private void button2_Click(object sender, EventArgs e)
{
FolderBrowserDialog fd = new FolderBrowserDialog();
if (fd.ShowDialog() == DialogResult.OK)
{
FTServerCode.receivedPath = fd.SelectedPath;
}
}
}
//FILE TRANSFER USING C#.NET SOCKET - SERVER
class FTServerCode
{
IPEndPoint ipEnd;
Socket sock;
public FTServerCode()
{
ipEnd = new IPEndPoint(IPAddress.Any, 5656);//提供一个IP 地址，指示服务器应监听网络接口上的客户端活动
sock = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.IP);
sock.Bind(ipEnd);//sock与本地的一个终结点相关联
}
public static string receivedPath;
public static string curMsg = "Stopped";
public void StartServer()
{
try
{
curMsg = "Starting...";
sock.Listen(100);
curMsg = "Running and waiting to receive file.";
Socket clientSock = sock.Accept();
byte[] clientData = new byte[1024 * 5000];
int receivedBytesLen = clientSock.Receive(clientData);
curMsg = "Receiving data...";
int fileNameLen = BitConverter.ToInt32(clientData, 0);//返回字节数组中指定位置的四个字节转化成32位有符号整数
//string fileName = Encoding.ASCII.GetString(clientData, 4, fileNameLen);//
string fileName = Encoding.GetEncoding("GB2312").GetString(clientData, 4, fileNameLen);
BinaryWriter bWrite = new BinaryWriter(File.Open(receivedPath +"/"+ fileName, FileMode.Append)); ;
bWrite.Write(clientData, 4 + fileNameLen, receivedBytesLen - 4 - fileNameLen);
curMsg = "Saving file...";
bWrite.Close();
clientSock.Close();
curMsg = "Reeived & Saved file; Server Stopped.";
}
catch (Exception ex)
{
curMsg = "File Receving error.";
}
}
}
}