上载
使用.NET框架将二进制文件上传到FTP服务器的最简单的方法是使用
WebClient.UploadFile:
WebClient client = new WebClient();client.Credentials = new NetworkCredential("username", "password");client.UploadFile("ftp://ftp.example.com/remote/path/file.zip", @"C:localpathfile.zip");如果您需要更大的控制权
WebClient(例如TLS /
SSL加密等),则无法使用,请使用
FtpWebRequest。简单的方法是
FileStream使用
Stream.CopyTo以下命令将a复制到FTP流:
FtpWebRequest request = (FtpWebRequest)WebRequest.Create("ftp://ftp.example.com/remote/path/file.zip");request.Credentials = new NetworkCredential("username", "password");request.Method = WebRequestMethods.Ftp.UploadFile;using (Stream fileStream = File.OpenRead(@"C:localpathfile.zip"))using (Stream ftpStream = request.GetRequestStream()){ fileStream.CopyTo(ftpStream);}如果需要监视上传进度,则必须自己逐块复制内容:
FtpWebRequest request = (FtpWebRequest)WebRequest.Create("ftp://ftp.example.com/remote/path/file.zip");request.Credentials = new NetworkCredential("username", "password");request.Method = WebRequestMethods.Ftp.UploadFile;using (Stream fileStream = File.OpenRead(@"C:localpathfile.zip"))using (Stream ftpStream = request.GetRequestStream()){ byte[] buffer = new byte[10240]; int read; while ((read = fileStream.Read(buffer, 0, buffer.Length)) > 0) { ftpStream.Write(buffer, 0, read); Console.WriteLine("Uploaded {0} bytes", fileStream.Position); } }有关GUI进度(WinForms
ProgressBar),请参见:
我们如何显示进度栏,以便使用FtpWebRequest上传
如果要从文件夹上传所有文件,请参阅
C#中的“递归上传到FTP服务器”。
下载
使用.NET框架从FTP服务器下载二进制文件的最简单的方法是使用
WebClient.DownloadFile:
WebClient client = new WebClient();client.Credentials = new NetworkCredential("username", "password");client.DownloadFile( "ftp://ftp.example.com/remote/path/file.zip", @"C:localpathfile.zip");如果您需要更大的控制权
WebClient(例如TLS /
SSL加密等),则无法使用,请使用
FtpWebRequest。简单的方法是将FTP响应流复制到
FileStream使用
Stream.CopyTo:
FtpWebRequest request = (FtpWebRequest)WebRequest.Create("ftp://ftp.example.com/remote/path/file.zip");request.Credentials = new NetworkCredential("username", "password");request.Method = WebRequestMethods.Ftp.DownloadFile;using (Stream ftpStream = request.GetResponse().GetResponseStream())using (Stream fileStream = File.Create(@"C:localpathfile.zip")){ ftpStream.CopyTo(fileStream);}如果需要监视下载进度,则必须自己逐块复制内容:
FtpWebRequest request = (FtpWebRequest)WebRequest.Create("ftp://ftp.example.com/remote/path/file.zip");request.Credentials = new NetworkCredential("username", "password");request.Method = WebRequestMethods.Ftp.DownloadFile;using (Stream ftpStream = request.GetResponse().GetResponseStream())using (Stream fileStream = File.Create(@"C:localpathfile.zip")){ byte[] buffer = new byte[10240]; int read; while ((read = ftpStream.Read(buffer, 0, buffer.Length)) > 0) { fileStream.Write(buffer, 0, read); Console.WriteLine("Downloaded {0} bytes", fileStream.Position); }}有关GUI进度(WinForms
ProgressBar),请参见:
FtpWebRequest使用ProgressBar下载FTP
如果要从远程文件夹
下载所有文件,请参见C#通过FTP下载所有文件和子目录。



