1.FTP模式
代码如下：
（1）浏览
/// <summary> /// 浏览文件 /// </summary> /// <param name="tbControl">控件名称</param> private void ViewFile(TextBox tbControl) { OpenFileDialog openFileDialogTemp = new OpenFileDialog();//提示用户打开文件弹窗 //设置文件类型 string filterStr = "";//文件类型过滤 int fileLength = 100 * 1024 * 1024;//文件大小限制（1M = 1024KB = 1024*1024字节） string fileLenDes = "100M";//文件大小描述，默认100M switch (tbControl.Name)//根据控件名称判断过滤字符串 { case "txtTemplatePath"://模板 filterStr = "All files(*.*)|*.*"; break; case "txtCusSoftwarePath"://定制软件 filterStr = "All files(*.*)|*.*"; break; default://检查清单 filterStr = "Word或Excel文件(*.doc,*.docx,*.xls,*.xlsx,*.wps,*.et)|*.doc;*.docx;*.xls;*.xlsx;*.wps;*.et;"; break; } openFileDialogTemp.Filter = filterStr; DialogResult dr = openFileDialogTemp.ShowDialog();//弹窗返回值 if (dr == DialogResult.OK) { //获取用户选择的文件 FileInfo fileInfo = new FileInfo(openFileDialogTemp.FileName); if (fileInfo.Length > fileLength)//判断文件大小是否超出限制 { this.MessageShow("上传文件不能大于" + fileLenDes); return; } tbControl.Text = openFileDialogTemp.FileName; } }
(2)上传
// 定制软件上传 private void btnCusSoftwareUpload_Click(object sender, EventArgs e) { if (txtStatus.Text.Trim() != "实施中") { this.MessageShow("该任务不在实施中，不能进行此操作，请确认"); return; } bool result = UpLoadFile(txtCusSoftwarePath);//代码在下面 if (result == true) { txtCusSoftwareName.Text = Path.GetFileName(txtCusSoftwarePath.Text);//更新定制软件名称 } }
/// <summary> /// 上传文件 /// </summary> /// <param name="tbControl">控件名称</param> /// <returns>是否上传成功</returns> private bool UpLoadFile(TextBox tbControl) { bool resFlag = false; try { this.Cursor = Cursors.WaitCursor;//光标等待 string filePath = tbControl.Text.Trim();//文件路径 if (string.IsNullOrEmpty(filePath)) { MessageShow("没有可上传的文件"); return resFlag; } ////判断远程服务器中是否存在该文件(由于删除动作并没有删除服务器中的文件，所以如果某文件上传后被删除再上传就会出现无法上传的情况) //if (FileIsExist(mFtpFullPath + Path.GetFileName(filePath)) == true) //{ // this.MessageShow("远程服务器中已经存在该文件，请勿重复上传！"); // return resFlag; //} Upload(filePath, mFtpFullPath, mFtpUserId, mFtpPassword);//代码在下面 //保存文件 //说明：BARCODE.PDM_PACK_IMAGES表是存上传文件的表，其中PD_ID字段是对应需要上传的表的主键，IMAGES字段是文件上传到ftp的完全路径 int saveRecordID = SaveUploadFile(filePath);//保存在本地表的主键id mSavePathID = saveRecordID; int tIndex;//临时变量，用来区分保存类型 if (saveRecordID > 0)//保存文件成功 { //本地表中保存上传文件的ftp表记录ID Hashtable ht = new Hashtable(); string FileName = Path.GetFileName(filePath);//文件名称 switch (tbControl.Name)//文件保存路径（存的是保存表的记录id） { case "txtCusSoftwarePath"://定制软件上传 ht.Add("CusSoftwarePath", saveRecordID.ToString()); ht.Add("CusSoftwareName", FileName); mChoosedLabelRow["CUS_SOFTWARE_PATH"] = saveRecordID.ToString();//更新内存中的模板地址 tIndex = 2; break; default://检查清单上传 ht.Add("CheckListPath", saveRecordID.ToString()); ht.Add("CheckListName", FileName); mChoosedLabelRow["CHECK_LIST_PATH"] = saveRecordID.ToString();//更新内存中的模板地址 tIndex = 3; break; } int result = UpdateDatas(ht);//执行更新 if (result > 0) { resFlag = true; switch (tIndex) //更新临时变量中的模板地址 { case 1: mTemplatePath = GetFileSavePath(tIndex, mLableID, saveRecordID.ToString()); break; case 2: mCustomSoftwarePath = GetFileSavePath(tIndex, mLableID, saveRecordID.ToString()); break; default: mCheckListPath = GetFileSavePath(tIndex, mLableID, saveRecordID.ToString()); break; } } }//if (saveRecordID > 0) end }//try end catch (Exception ex) { ErrorCommand(ex); } finally { this.Cursor = Cursors.Default; } return resFlag; }
/// <summary> /// ftp上传 /// </summary> /// <param name="fileName">客户端上传文件名称</param> /// <param name="ftpFullPath">ftp完整路径,例如 ftp://10.18.178.154/mes_upload/ManuNotice/P108A5/126708201002/label/ </param> /// <param name="ftpUserId">ftp登陆用户名</param> /// <param name="ftpPassword">ftp登陆密码</param> public static void Upload(string fileName, string ftpFullPath, string ftpUserId, string ftpPassword) { FileInfo fileInf = new FileInfo(fileName);//--using System.IO; string uri = ftpFullPath + fileInf.Name; FtpWebRequest reqFTP;//--using System.Net; // 根据uri创建FtpWebRequest对象 reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(uri));//fileInf.Name //ftp用户名和密码 reqFTP.Credentials = new NetworkCredential(ftpUserId, ftpPassword); //默认为True，连接不会被关闭 //在一个命令之后执行 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; // 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); // 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); } // 关闭两个流 strm.Close(); } catch (Exception) { } finally { fs.Close(); } }//function end
注意，上传下载地址可以放在配置文件中取，例如：
后台取数据：
ms.Url = System.Configuration.ConfigurationSettings.AppSettings["GetAccessoryPathForMes"].ToString();//ftp地址WebService ftpUserId = System.Configuration.ConfigurationSettings.AppSettings["FtpUserId"].ToString(); //ftp登陆账号 ftpPassword = System.Configuration.ConfigurationSettings.AppSettings["FtpPassword"].ToString(); //ftp登陆密码
（3）下载
/// <summary> /// 下载文件 /// </summary> /// <param name="tbControl">控件名称</param> private void DownLoadFile(TextBox tbControl) { try { this.Cursor = Cursors.WaitCursor; string localFilePath = String.Empty; SaveFileDialog saveFileDialog = new SaveFileDialog(); //设置文件相关信息 string filterStr = "";//过滤文件类型字符串 string filePathStr = "";//路径 switch (tbControl.Name)//根据控件名称判断过滤字符串 { case "txtTemplatePath": filterStr = "All files(*.*)|*.*"; filePathStr = mTemplatePath; break; case "txtCusSoftwarePath": filterStr = "All files(*.*)|*.*"; filePathStr = mCustomSoftwarePath; break; default: filterStr = "Word或Excel文件|*.doc;*.docx;*.xls;*.xlsx;*.wps;*.et;"; filePathStr = mCheckListPath; break; } saveFileDialog.Filter = filterStr; //设置文件名称： string filePath = filePathStr; //下载的文件名称为空时return if (string.IsNullOrEmpty(filePath)) { this.MessageShow("找不到当前文件存储路径"); return; } string fileName = Path.GetFileName(filePath);//获取文件名和扩展名 saveFileDialog.FileName = fileName; //设置默认文件类型显示顺序 saveFileDialog.FilterIndex = 1; //保存对话框是否记忆上次打开的目录 saveFileDialog.RestoreDirectory = true; //点了保存按钮进入 if (saveFileDialog.ShowDialog() == DialogResult.OK) { //获得文件路径 localFilePath = saveFileDialog.FileName.ToString(); PublicMethod.Download(localFilePath, filePath, mFtpUserId, mFtpPassword); } } catch (Exception ex) { ErrorCommand(ex);//异常处理 } finally { this.Cursor = Cursors.Default; } } /// <summary> /// ftp下载 /// </summary> /// <param name="clientFilePath">下载保存的客户端完整路径</param> /// <param name="fullPath">ftp完整文件路径及文件名</param> /// <param name="ftpUserId">ftp登陆用户</param> /// <param name="ftpPassword">ftp登陆密码</param> public static void Download(string clientFilePath, string fullPath, string ftpUserId, string ftpPassword) { string dFileName = Path.GetFileName(fullPath); string rootPath = fullPath.Substring(0, fullPath.LastIndexOf("/")) + "/"; //定义FTP请求对象 FtpWebRequest reqFTP = null; //定义FTP响应对象 FtpWebResponse response = null; //存储流 FileStream outputStream = null; //FTP数据流 Stream ftpStream = null; try { //生成下载文件 outputStream = new FileStream(clientFilePath, FileMode.Create); //生成FTP请求对象 reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(rootPath + dFileName)); //设置登录FTP帐号和密码 reqFTP.Credentials = new NetworkCredential(ftpUserId, ftpPassword); //默认为True，连接不会被关闭 //在一个命令之后执行 reqFTP.KeepAlive = false; //设置下载文件方法 reqFTP.Method = WebRequestMethods.Ftp.DownloadFile; //设置文件传输类型 reqFTP.UseBinary = true; //生成FTP响应对象 response = (FtpWebResponse)reqFTP.GetResponse(); //获取FTP响应流对象 ftpStream = response.GetResponseStream(); //响应数据长度 long cl = response.ContentLength; int bufferSize = 2048; int readCount; byte[] buffer = new byte[bufferSize]; //接收FTP文件流 readCount = ftpStream.Read(buffer, 0, bufferSize); while (readCount > 0) { outputStream.Write(buffer, 0, readCount); readCount = ftpStream.Read(buffer, 0, bufferSize); } } catch (Exception) { //MessageShow(ex.ToString()); } finally { if (ftpStream != null) { ftpStream.Close(); } if (outputStream != null) { outputStream.Close(); } if (response != null) { response.Close(); } } }
（由于时间关系很多细节没有处理，这只是工作中的一个摘抄，不详之处还请原谅。）
2.文件流模式
/// <summary> /// 来料设计稿/标贴设计稿下载 /// </summary> /// <param name="btnID">0代表来料设计稿，1代表标贴设计稿</param> private void DownLoadDesignDraft(int btnID) { try { this.Cursor = Cursors.WaitCursor;//设置光标等待 #region 获取下载文件所需相关信息 string webUrl = string.Empty;//下载地址 string[] tempArray = null;//临时数组（数据库中的来料设计稿ID和名称是放一起的，格式如“id|name”) string backFileName = string.Empty;//如果文件名称不存在就临时创建一个名称 string onlyID = string.Empty;//下载接口对应的唯一id string fileName = string.Empty;//下载文件的名称 if (btnID == 0)//来料设计稿 { tempArray = mChoosedLabelRow["INCOMINGFILE"].ToString().Trim().Split('|'); //backFileName = "标贴类任务维护来料设计稿" + DateTime.Now.ToString("yyyyMMddhhmmssfff"); } else //标贴设计稿 { tempArray = mChoosedLabelRow["LABELFILE"].ToString().Trim().Split('|'); //backFileName = "标贴类任务维护标贴设计稿" + DateTime.Now.ToString("yyyyMMddhhmmssfff"); } if (tempArray != null && tempArray.Length > 1) { onlyID = tempArray[0].ToString(); //下载接口对应的唯一id fileName = tempArray[1].ToString();//下载文件的名称 if (onlyID == "" || fileName == "") { this.MessageShow("下载文件ID或文件名称不存在，请确认"); return; } //fileName = fileName.Replace(".xlsx", "").Replace(".xls", "") + ".xlsx";//添加文件后缀 // 从配置文件中取地址，地址例如：http://10.5.4.28/PDM_Eai/EaiService/ProdName/PDM_M00_AttachFileStreamSrv.aspx webUrl = System.Configuration.ConfigurationSettings.AppSettings["LabelTypeTaskManage_DownloadAddress"].ToString(); if (webUrl == "") { this.MessageShow("找不到文件的下载地址"); return; } }//if (tempArray != null && tempArray.Length > 1) end else { this.MessageShow("没有可以下载的文件"); return; } #endregion SaveFileDialog saveDialog = new SaveFileDialog();//保存文件对话框，--using System.Windows.Forms; //saveDialog.Filter = "All files(*.xls,*.xlsx)|*.xls;*.xlsx";//设置文件类型 saveDialog.Filter = "All files|*.*";//设置文件类型 saveDialog.FileName = fileName;//设置文件名称 saveDialog.FilterIndex = 1;//设置默认文件类型显示顺序 saveDialog.RestoreDirectory = true; //保存对话框是否记忆上次打开的目录 string localFilePath = String.Empty;//下载文件的本地保存地址 //点了保存按钮进入 if (saveDialog.ShowDialog() == DialogResult.OK) { //获得文件路径 localFilePath = saveDialog.FileName.ToString(); //开始下载 HttpWebRequest req = (HttpWebRequest)HttpWebRequest.Create(webUrl + "?id=" + onlyID);--using System.Net; HttpWebResponse wr = (HttpWebResponse)req.GetResponse();--using System.Net; Stream responseStream = wr.GetResponseStream();--using System.IO; StreamReader reader = new StreamReader(responseStream);--using System.IO; FileStream fs = new FileStream(@"" + localFilePath, FileMode.OpenOrCreate, FileAccess.ReadWrite, FileShare.None); int iBufferSize = 1024;//响应长度 byte[] byteFileBlock = new byte[iBufferSize]; int bytesRead = 0; while (true) { bytesRead = responseStream.Read(byteFileBlock, 0, iBufferSize); if (bytesRead == 0) { break; } fs.Write(byteFileBlock, 0, bytesRead); } } }//try end catch (Exception ex) { ErrorCommand(ex); } finally { this.Cursor = Cursors.Default; } }//function end