C# FTP操作工具

篇幅有限，这里就放一下操作FTP公共类代码；

其他的也没什么功能，一个页面展示（主要是TreeView控件和ListView控件）,还有一个就是获取本地的文件（DirectoryInfo类）

实现功能：

• 实现使用FTP上传、下载、重命名、刷新、删除功能

开发环境：

开发工具：Visual Studio 2013

.NET Framework版本：4.5

实现代码：

 /*FTP操作公共类*/
  private string FtpIp, FtpPort, FtpUser, FtpPwd, FtpUrl;
  private FTPUtil()  {
  }
  public FTPUtil(string ftpIp, string ftpPort, string ftpUser, string ftpPwd)  {      FtpIp = ftpIp;      FtpPort = ftpPort;      FtpUser = ftpUser;      FtpPwd = ftpPwd;
      FtpUrl = "ftp://" + ftpIp + ":" + ftpPort + "/";  }
  private FtpWebRequest GetFtpWebRequest(string path, string method)  {      FtpWebRequest Ftp = (FtpWebRequest)FtpWebRequest.Create(new Uri(FtpUrl + "/" + path));      Ftp.Credentials = new NetworkCredential(FtpUser, FtpPwd);      Ftp.KeepAlive = false;      Ftp.UsePassive = true;      Ftp.Method = method;      return Ftp;  }
  /// <summary>  /// 获取路径下所有文件夹  /// </summary>  /// <param name="dirName"></param>  /// <returns></returns>  public List<FileModel> GetDirs(string dirName)  {      return GetAllFiles(dirName).FindAll(s => s.Type == "文件夹");  }
  /// <summary>  /// 获取路径下所有文件  /// </summary>  /// <param name="dirName"></param>  /// <returns></returns>  public List<FileModel> GetFiles(string dirName)  {      return GetAllFiles(dirName).FindAll(s => s.Type == "文件");  }
  /// <summary>  /// 获取路径下所有项目  /// </summary>  /// <param name="dirName"></param>  /// <returns></returns>  public List<FileModel> GetAllFiles(string dirName)  {      List<FileModel> fileList = new List<FileModel>();      try      {          FtpWebRequest Ftp = GetFtpWebRequest(dirName, WebRequestMethods.Ftp.ListDirectoryDetails);
          using (WebResponse response = Ftp.GetResponse())          {              using (StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.UTF8))              {                  string line = "";                  while ((line = reader.ReadLine()) != null)                  {                      fileList.Add(ConvertFile(line, dirName));                  }              }          }      }      catch (Exception ex)      {          throw ex;      }      return fileList;  }
  /// <summary>  /// FTP文件信息转换  /// </summary>  /// <param name="value"></param>  /// <param name="dirName"></param>  /// <returns></returns>  private FileModel ConvertFile(string value, string dirName)  {      string[] arr = value.Split(new string[] { " " },4, StringSplitOptions.RemoveEmptyEntries);
     FileModel model = new FileModel();      model.Date = arr[0];      model.Time = arr[1];      if (arr[2] == "<DIR>")      {          model.Type = "文件夹";          model.Size = 0;      }      else      {          model.Type = "文件";          model.Size = Convert.ToInt64(arr[2]);      }      model.Name = arr[3];      model.FullName = dirName + "/" + model.Name;      return model;  }
  /// <summary>  /// 上传  /// </summary>  /// <param name="fileName"></param>  /// <param name="desFile"></param>  public void Upload(string fileName, string desFile)  {      try      {          FileInfo fileInfo = new FileInfo(fileName);
          FtpWebRequest Ftp = GetFtpWebRequest(desFile, WebRequestMethods.Ftp.UploadFile);          Ftp.UseBinary = true;          Ftp.ContentLength = fileInfo.Length;

          int buffLength = 2048;          byte[] buff = new byte[buffLength];          int len = 0;          using (FileStream fs = fileInfo.OpenRead())          {              using (Stream stream = Ftp.GetRequestStream())              {                  while ((len = fs.Read(buff, 0, buffLength)) != 0)                  {                      stream.Write(buff, 0, buffLength);                  }              }          }      }      catch (Exception ex)      {          throw ex;      }

  }
  /// <summary>  /// 下载  /// </summary>  /// <param name="fileName"></param>  /// <param name="desFile"></param>  public void DownLoad(string fileName, string desFile)  {      try      {          FtpWebRequest Ftp = GetFtpWebRequest(fileName, WebRequestMethods.Ftp.DownloadFile);          Ftp.UseBinary = true;
          FtpWebResponse response = (FtpWebResponse)Ftp.GetResponse();          int buffLength = 2048;          byte[] buff = new byte[buffLength];          int len = 0;          using (FileStream fs = new FileStream(desFile, FileMode.Create))          {              using (Stream stream = response.GetResponseStream())              {                  while ((len = stream.Read(buff, 0, buffLength)) != 0)                  {                      fs.Write(buff, 0, buffLength);                  }              }          }      }      catch (Exception ex)      {          throw ex;      }  }
  /// <summary>  /// 删除文件  /// </summary>  /// <param name="fileName"></param>  public void DeleteFile(string fileName)  {      try      {          FtpWebRequest Ftp = GetFtpWebRequest(fileName, WebRequestMethods.Ftp.DeleteFile);
          FtpWebResponse response = (FtpWebResponse)Ftp.GetResponse();
          using (Stream datastream = response.GetResponseStream())          {              using (StreamReader sr = new StreamReader(datastream))              {                  sr.ReadToEnd();              }          }      }      catch (Exception ex)      {          throw ex;      }  }

  /// <summary>  /// 重命名  /// </summary>  /// <param name="fileName"></param>  /// <param name="newName"></param>  public void ReName(string fileName, string newName)  {      try      {          FtpWebRequest Ftp = GetFtpWebRequest(fileName, WebRequestMethods.Ftp.Rename);          Ftp.RenameTo = newName;          Ftp.UseBinary = true;
          FtpWebResponse response = (FtpWebResponse)Ftp.GetResponse();
          using (Stream datastream = response.GetResponseStream())          {              using (StreamReader sr = new StreamReader(datastream))              {                  sr.ReadToEnd();              }          }      }      catch (Exception ex)      {          throw ex;      }  }

实现效果：

FTP 操作工具视频演示

https://www.ixigua.com/7041474410389176844

由简入繁，拿来即用

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