上传的核心方法：直接调用就可以了

     

// filename上传文件路径

//ftpServerIP 服务器Ip，默认端口是21

//ftpUserID，服务器用户名。

//ftpPassword，服务器密码

public int Upload(string filename, string ftpServerIP, string ftpUserID, string ftpPassword)

        {             //读取要上传服务器的Ip              FileInfo fileInf = new FileInfo(filename);                      string uri = "ftp://" + ftpServerIP + "/" + fileInf.Name;             FtpWebRequest reqFTP;             //Response.Write("<script>alert('" + uri + "')</script>");             // 根据uri创建FtpWebRequest对象             reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri("ftp://" + ftpServerIP + "/" + 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

            // 在一个命令之后被执行             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();                 fs.Close();                 //this.Page.RegisterStartupScript("", "<script>alert('成功')</script>");                return 1;             }             catch (Exception ex)             {                 // MessageBox.Show(ex.Message, "Upload Error");                 throw ex;             }         }