文件传输接收端.doc

using System;using System.Drawing;using System.Collections;using System.ComponentModel;using System.Windows.Forms;using System.Data;using System.IO;using System.Net;using System.Net.Sockets;using System.Text;using System.Threading;using System.Xml.Serialization;namespace 文件传输之接收端/ Form1 的摘要说明。/publicclassForm1 : System.Windows.Forms.Formprivate System.Windows.Forms.Label label1;private System.Windows.Forms.Button button1;private System.Windows.Forms.Button button2;private System.Windows.Forms.Label label2;private System.Windows.Forms.TextBox txtPort;private System.Windows.Forms.TextBox txtIP;private System.Windows.Forms.ListBox listBox1;private System.Windows.Forms.SaveFileDialog saveFileDialog1;/ 必需的设计器变量。/private System.ComponentModel.Container components = null;privateFileDetails fileDet;/private Int32 port;privateUdpClient udpClient;privateIPEndPoint ipEndPoint = null;privateFileStream fs = null;privatebyte receiveBytes = newbyte0;privateThread threadReceive;public Form1()InitializeComponent();/ 清理所有正在使用的资源。/ 应用程序的主入口点。/STAThreadstaticvoid Main() Application.Run(newForm1();privatevoid button1_Click(object sender, System.EventArgs e)try/ 改变按钮控件的状态UpdateControls(false); udpClient = newUdpClient(Int32.Parse(txtPort.Text);threadReceive = newThread(newThreadStart(ReceiveMessages);threadReceive.Start();/GetFileDetails();/ReceiveFile();catch(Exception exc)listBox1.Items.Add(exc.Message);privatevoid ReceiveMessages()while(true)GetFileDetails();ReceiveFile();/ 停止服务Private void button2_Click(object sender, System.EventArgs e)tryUpdateControls(true);txtIP.Text = ;threadReceive.Abort();if(fs != null)fs.Close();udpClient.Close();catch(Exception exc)listBox1.Items.Add(exc.Message);Public class FileDetailspublicstring FILETYPE = ;publicint FILESIZE = 0;Private void GetFileDetails()trylistBox1.Items.Add(开始等待文件细节.);receiveBytes = udpClient.Receive(ref ipEndPoint);txtIP.Text = ipEndPoint.Address.ToString();listBox1.Items.Add(读取文件细节);XmlSerializer fileSerializer = newXmlSerializer(typeof(FileDetails);MemoryStream stream = newMemoryStream();stream.Write(receiveBytes, 0, receiveBytes.Length);stream.Position = 0;fileDet = (FileDetails)fileSerializer.Deserialize(stream);listBox1.Items.Add(接收到的文件其类型是: + fileDet.FILETYPE + 其大小是: + fileDet.FILESIZE.ToString() + 字节);catch(Exception exc)listBox1.Items.Add(exc.Message);privatevoid ReceiveFile()trylistBox1.Items.Add(等待文件.);receiveBytes = udpClient.Receive(ref ipEndPoint);listBox1.Items.Add(开始接收文件.);/ 文件名筛选器的说明string s = 文件(* + fileDet.FILETYPE + ) ;/listBox1.Items.Add(s = + s );saveFileDialog1.Filter = s.ToString() + |* + fileDet.FILETYPE ;if(saveFileDialog1.ShowDialog() = DialogResult.OK)fs = newFileStream(saveFileDialog1.FileName, FileMode.Create, FileAccess.ReadWrite, FileShare.ReadWrite);fs.Write(receiveBytes, 0, receiveBytes.Length);listBox1.Items.Add(文件已成功保存!);fs.Flush(); / 真正将数据写入文件中catch(Exception exc)/listBox1.Items.Add(exc.Message);MessageBox.Show(exc.Message);privatevoid Form1_Load(object sender, System.EventArgs e)UpdateControls(true);Form.CheckForIllegalCrossThreadCalls = false;/ 更新控件的状态。开始按钮与停止按钮(txtPort)的状态相反Private void UpdateControls(bool state)button1.Enabled = state; button2.Enabled = !state;txtPort.ReadOnly = !state;Private void