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";    //設置接收數據緩沖區的大小     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();    //關閉接收數據的Socket     newSocket.Shutdown(System.Net.Sockets.SocketShutdown.Receive);    newSocket.Close();     }   catch (Exception se)   {    serverSocket.Close();    MessageBox.Show("連接錯誤" + se.ToString());    return;   }  } }}