C#使用Socket上传并保存图片的方法

本文实例讲述了c#使用socket上传并保存图片的方法。分享给大家供大家参考。具分析如下：

使用string filename = openfile.filename;即返回带全路径的文件名 path.getfilenamewithoutextension(filename)即可获得不带路径、后缀名的文件名。 上传图片使用二进制 tcp协议上传的

客户端代码：

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)
  {
   //设定服务器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));
 //配置服务器ip与端口
   }
   catch
   {
    messagebox.show("连接服务器失败");
 
    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 = "图像文件(*.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;
   //即返回带全路径的文件名
   //path.getfilenamewithoutextension(filename)
   //即可获得不带路径、后缀名的文件名。
   byte[] msg = encoding.default.getbytes(path.getfilenamewithoutextension(openfile.filename));
   clientsocket.send(msg);
   try
   {
    //开始使用socket发送文件
    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;
   }
  }
 }
}

服务器端代码：

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);//从客户端接受信息 
   string name = encoding.ascii.getstring(recvbytes, 0, bytes);
   textbox1.text = name+".jpg";
    //设置接收数据缓冲区的大小 
    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);
    //关闭写文件流
    fs.close();
    //关闭接收数据的socket 
    newsocket.shutdown(system.net.sockets.socketshutdown.receive);
    newsocket.close();  
   }
   catch (exception se)
   {
    serversocket.close();
    messagebox.show("连接错误" + se.tostring());
    return;
   }
  }
 }
}

希望本文所述对大家的c#程序设计有所帮助。