测试提出代发工资模块上传加密文件报错，在vitual studio设置断点．定位到方法

                            corFileList.Add(upFile2);
                            j++;

                            payrollFtp.Upload(upFile);//上传文件的绝对路径（包含扩展名）

  upload方法细节如下：


  ///

        /// 上传
        ///

        ///
        public void Upload(string filename)
        {
            FileInfo fileInf = new FileInfo(filename);
            string uri = ftpURI + fileInf.Name;
            System.Net.FtpWebRequest reqFTP;
            reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(uri));
            reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);
            reqFTP.KeepAlive = false;
            reqFTP.Method = WebRequestMethods.Ftp.UploadFile;
            reqFTP.UseBinary = true;
            reqFTP.ContentLength = fileInf.Length;
            int buffLength = 2048;
            byte[] buff = new byte[buffLength];
            int contentLen;
            //20110905 zxy 创建上传到ftp server　文件的文件流
            FileStream fs = fileInf.OpenRead();
            try
            {
                Stream strm = reqFTP.GetRequestStream();
                contentLen = fs.Read(buff, 0, buffLength);
                while (contentLen != 0)
                {
                    strm.Write(buff, 0, contentLen);
                    contentLen = fs.Read(buff, 0, buffLength);
                }
                strm.Close();
                fs.Close();
            }
            catch (Exception ex)
            {
                //Insert_Standard_ErrorLog.Insert("FtpClient", "Upload Error --> " + ex.Message);
                throw new CoreBusinessException(99999L, "文件上传至ftp服务器时出现异常，请检查ftp服务器是否配置正确！", new string[] { });
            }

        }


后经分析，发现FTP服务器目录被我不小心移动了,导致上传找不到上传目录故报错


--摘录下ftpwebrequest类示例

http://msdn.microsoft.com/zh-cn/library/system.net.ftpwebrequest%28VS.80%29.aspx