这个类库对wininet.dll进行封装提供了 FTP 功能。使用C#语言和.NET框架建立一个与FTP服务器有效的交互方式。示例代码：

  using (FtpConnection ftp = new FtpConnection("ftpserver", "username", "password"))              {                                    ftp.Open(); /* Open the FTP connection */                  ftp.Login(); /* Login using previously provided credentials */                    if (ftp.DirectoryExists("/incoming")) /* check that a directory exists */                      ftp.SetCurrentDirectory("/incoming"); /* change current directory */                    if (ftp.FileExists("/incoming/file.txt"))  /* check that a file exists */                      ftp.GetFile("/incoming/file.txt", false); /* download /incoming/file.txt as file.txt to current executing directory, overwrite if it exists */                    //do some processing                    try                  {                      ftp.SetCurrentDirectory("/outgoing");                      ftp.PutFile(@"c:\localfile.txt", "file.txt"); /* upload c:\localfile.txt to the current ftp directory as file.txt */                  }                  catch (FtpException e)                  {                      Console.WriteLine(String.Format("FTP Error: {0} {1}", e.ErrorCode, e.Message));                  }                    foreach(var dir in ftp.GetDirectories("/incoming/processed"))                  {                      Console.WriteLine(dir.Name);                      Console.WriteLine(dir.CreationTime);                      foreach (var file in dir.GetFiles())                      {                          Console.WriteLine(file.Name);                          Console.WriteLine(file.LastAccessTime);                      }                  }              }

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