.net中fit上传文件代码

/// <summary>
        /// 上传文件
        /// </summary>
        /// <param name="filename"></param>
        /// <param name="ftpServerIP"></param>
        /// <param name="ftpPath">e.g. /uploadpath</param>
        /// <param name="ftpUserID"></param>
        /// <param name="ftpPassword"></param>
        private bool Upload(string filename, string ftpServerIP, string ftpPath, string ftpUserID, string ftpPassword)
        {

            FileInfo fileInf = new FileInfo(filename);
            string uri = "ftp://" + ftpServerIP + ftpPath + "/" + fileInf.Name;


            //是否覆盖
            if (ValidateFileExists(uri, ftpUserID, ftpPassword))
            {
                if (MessageBox.Show("文件(" + filename + ")在服务器上存在,是否覆盖?", "是否覆盖?", MessageBoxButtons.OKCancel) == DialogResult.Cancel)
                {
                    return false;
                }
            }

            FtpWebRequest reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(uri));
            // 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;
            reqFTP.KeepAlive = true;

            // 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;

            //this.Invoke(InitUProgress, 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);

                //this.Invoke(SetUProgress, Convert.ToInt64(contentLen));
                // 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);
                    //this.Invoke(SetUProgress, contentLen);
                    //this.Invoke(SetUProgress, Convert.ToInt64(contentLen));
                }

                // 关闭两个流
                strm.Close();
                fs.Close();

                return true;
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.StackTrace);
                return false;
            }
        }

posted on 2012-03-28 08:52  larryle  阅读(261)  评论(0)    收藏  举报