C# 文件上传、带进度（FTP类）

调用方法，目前只用上传功能： 定义全局私有变量： private clsFTP cf; 按钮事件： private void btn_upFile_Click(object sender, EventArgs e) { lb_upload.Text = "正在上传文件，请等待..."; cf = new clsFTP(new Uri("ftp://192.168.43.55"), "temp", "temp"); string localFile = Application.StartupPath.ToString() + "\\output\\zt.rar"; cf.UploadProgressChanged+=new clsFTP.De_UploadProgressChanged(cf_UploadProgressChanged); cf.UploadFileCompleted+=new clsFTP.De_UploadFileCompleted(cf_UploadFileCompleted); cf.UploadFileAsync(localFile, true); //调用异步传输，若有文件存在则覆盖。 } 事件捆绑，反映上传进度： public void cf_UploadProgressChanged(object sender, UploadProgressChangedEventArgs e) { this.pgrBarFileUpload.Maximum = (int)e.TotalBytesToSend; this.pgrBarFileUpload.Value =(int) e.BytesSent; lb_upload.Text = string.Format("文件总大小：{0}k，已经上传： {1}k。", e.TotalBytesToSend/1024,e.BytesSent/1024); } public void cf_UploadFileCompleted(object sender, UploadFileCompletedEventArgs e) { try { lb_upload.Text = "无法连接到服务器，或者用户登陆失败！"; lb_error.Text =e.Error.Message.ToString(); } catch { lb_upload.Text = "文件上传成功！"; lb_error.Text = ""; } }