using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Net;
using System.Net.Sockets;
using System.Threading;
using System.IO;
namespace socketClient
{
 public partial class Form1 : Form
 {
  Socket clientSocket;
  private static byte[] result = new byte[1024];
  
  public Form1()
  {
   InitializeComponent();
  }
  private void buttonBegin_Click(object sender, EventArgs e)
  {
   //設定服務器IP地址
   IPAddress ip = IPAddress.Parse("127.0.0.1");
   clientSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
   try
   {
    clientSocket.Connect(new IPEndPoint(ip, 8000));
 //配置服務器IP與端口
   }
   catch
   {
    MessageBox.Show("連接服務器失敗");
 
    return;
   }  
  }
  private void buttonClose_Click(object sender, EventArgs e)
  {
   this.Close();
  }
  private void buttonSelect_Click(object sender, EventArgs e)
  {
   OpenFileDialog openFile = new OpenFileDialog();
   openFile.Filter = "圖像文件(*.bmp;*.gif;*.jpg;*.jpeg;*.png)|*.bmp;*.gif;*.jpg;*.jpeg;*.png";
   openFile.Multiselect = false;
 
   if (openFile.ShowDialog() == DialogResult.OK)
   {
    textBox2.Text =openFile.FileName;
   }
   //string filename = openFile.FileName;
   //即返回帶全路徑的文件名
   //Path.GetFileNameWithoutExtension(filename)
   //即可獲得不帶路徑、后綴名的文件名。
   byte[] msg = Encoding.Default.GetBytes(Path.GetFileNameWithoutExtension(openFile.FileName));
   clientSocket.Send(msg);
   try
   {
    //開始使用socket發(fā)送文件
    FileStream fs = new FileStream(openFile.FileName, FileMode.OpenOrCreate, FileAccess.Read);
    byte[] fssize = new byte[fs.Length];
    BinaryReader strread = new BinaryReader(fs);
    strread.Read(fssize, 0, fssize.Length - 1);
    clientSocket.Send(fssize);
    fs.Close();
    clientSocket.Shutdown(System.Net.Sockets.SocketShutdown.Send);
    clientSocket.Close();
   }
   catch (Exception ex)
   {
    string s = ex.ToString();
    return;
   }
  }
 }
}

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Net.Sockets;
using System.Net;
using System.Threading;
using System.IO;
using System.Drawing.Imaging;
namespace socketServer
{
 public partial class Form1 : Form
 {
  private static byte[] result = new byte[1024];
   Socket serverSocket;
  public Form1()
  {
   InitializeComponent();
  }
  private void button1_Click(object sender, EventArgs e)
  {
   try
   {
   IPAddress ip = IPAddress.Parse("127.0.0.1");
   IPEndPoint iep = new IPEndPoint(ip, 8000);
   serverSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
   serverSocket.Bind(iep); 
   serverSocket.Listen(10);   
   byte[] recvBytes = new byte[1024];
   int bytes = newSocket.Receive(recvBytes, recvBytes.Length, SocketFlags.None);//從客戶端接受信息 
   string name = Encoding.ASCII.GetString(recvBytes, 0, bytes);
   textBox1.Text = name+".jpg";
    //設置接收數(shù)據(jù)緩沖區(qū)的大小 
    byte[] b = new byte[1024 * 4];
    MemoryStream fs = new MemoryStream();
    int got = 0;
    int datalength = 0;
    while (true)
    {
     got = newSocket.Receive(b);
     fs.Write(b, 0, got);
     if (got > 0)
      datalength = datalength + got;
     else
      break;
    }
    Bitmap Img = new Bitmap(fs);
    pictureBox1.Image = Img;
    string filename = name + ".jpg";
    Img.Save(@"D:images"+filename, ImageFormat.Jpeg);
    //關閉寫文件流
    fs.Close();
    //關閉接收數(shù)據(jù)的Socket 
    newSocket.Shutdown(System.Net.Sockets.SocketShutdown.Receive);
    newSocket.Close();  
   }
   catch (Exception se)
   {
    serverSocket.Close();
    MessageBox.Show("連接錯誤" + se.ToString());
    return;
   }
  }
 }
}