因为项目要求，制作的一个多文件上传，并显示进度条一段代码(vs环境)。
(只为粗略的实现，代码并不规范)
当多个文件上传的时候，需要依次队列形式一个个上传，当上传某个文件的时候，锁定进程，上传完毕再开启锁。
在主类中的上传按钮事件代码:C# code//获取openFileDialog控件选择的文件名数组(openFileDialog可多个文件选择) private void button1_Click(object sender, EventArgs e){label1.Text = "";try{this.openFileDialog1.ShowDialog();path = this.openFileDialog1.FileNames; //获取openFileDialog控件选择的文件名数组 string strpath = "";for (int y = 0; y < path.Length; y++){strpath += path[y];}textBox1.Text = strpath;}catch{this.lbl_ftpStakt.Text = "请选择文件!";}}//上传按钮事件 private void button2_Click(object sender, EventArgs e){this.lbl_ftpStakt.Visible = true; //设置上传信息标签可见 this.lbl_ftpStakt.Text = "连接服务器...";try{for (i = 0; i < path.Length; i++){filename = path[i].ToString();//实例化事件类 myTest fo = new myTest(filename);fo.startUpEvent+=new myTest.myUpEventsHandler(this.RunsOnWorkerThread); //注册事件 fo.mythreadStart(); //调用类的方法FileInfo p = new FileInfo(path[i].ToString());uploadSQL(p.Name); //上传到库 }//label1.Text = "上传成功"; }catch{string s="";for (int x = i; x < path.Length; x++){FileInfo file = new FileInfo(path[i].ToString());s += file.Name + " ";}this.lbl_ftpStakt.Text = "上传失败";MessageBox.Show(s.ToString()+" 上传失败","提示");}}//连接ftp上传 public void RunsOnWorkerThread(string _filename){//阻塞线程 mt.WaitOne();Interlocked.Increment(ref flag); //状态值+1this.lbl_ftpStakt.Text = "连接服务器中...";FileInfo fileInf = new FileInfo(_filename);FtpWebRequest reqFTP;// 根据uri创建FtpWebRequest对象 reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri("ftp://210.82.***.***/" + fileInf.Name));// ftp用户名和密码 reqFTP.Credentials = new NetworkCredential("record", "files");// 默认为true，连接不会被关闭// 在一个命令之后被执行 reqFTP.KeepAlive = false;// 指定执行什么命令 reqFTP.Method = WebRequestMethods.Ftp.UploadFile;// 指定数据传输类型 reqFTP.UseBinary = true;// 上传文件时通知服务器文件的大小 reqFTP.ContentLength = fileInf.Length;//long _length = fileInf.Length; /////////// 缓冲大小设置为2kb int buffLength = 2048; //// byte[] buff = new byte[buffLength];int contentLen;// 打开一个文件流 (System.IO.FileStream) 去读上传的文件 FileStream fs = fileInf.OpenRead();try{// 把上传的文件写入流 Stream strm = reqFTP.GetRequestStream();// 每次读文件流的2kb contentLen = fs.Read(buff, 0, buffLength);int allbye = (int)fileInf.Length;int startbye = 0;this.myProgressControl.Maximum = allbye;this.myProgressControl.Minimum = 0;this.myProgressControl.Visible = true;this.lbl_ftpStakt.Visible = true;this.lbl_ftpStakt.Text = "服务器连接中...";// 流内容没有结束 while (contentLen != 0){// 把内容从file stream 写入 upload stream strm.Write(buff, 0, contentLen);contentLen = fs.Read(buff, 0, buffLength);startbye += contentLen;this.lbl_ftpStakt.Text = "已上传:" + (int)(startbye / 1024) + "KB/" + "总长度:" + (int)(allbye / 1024) + "KB" + " " + " 文件名:" + fileInf.Name;myProgressControl.Value = startbye;}// 关闭两个流 strm.Close();fs.Close();this.myProgressControl.Visible = false;this.lbl_ftpStakt.Text = "上传成功!";}catch (Exception ex){MessageBox.Show(ex.Message, "Upload Error");}Interlocked.Decrement(ref flag);mt.ReleaseMutex();//释放线程 }
处理上传线程的委托事件类
C# code/// <summary>/// 委托事件类/// </summary> class myTest{public string filename;public delegate void myUpEventsHandler(string _filename);public event myUpEventsHandler startUpEvent;public myTest(){}/// <summary>////// </summary>/// <param name="_filename">上传的文件名</param> public myTest(string _filename){this.filename = _filename;}/// <summary>/// 开始一个线程，执行事件/// </summary> public void mythreadStart(){Thread thr = new Thread(new ThreadStart(this.mystart));thr.Start();}/// <summary>/// 开始事件/// </summary> public void mystart(){startUpEvent(this.filename);}}
