C#数据上传方法

     /// <summary>
        /// 连接成功后开始调用数据上传程序
        /// </summary>
        public void CallDataUpload()
        {
            //指定上传日期后，只上传指定日期的数据
            //取指定的上传日期
            string defineScrq = GetDefineScrq();
            if (defineScrq != "")
            {
                scrq = Convert.ToDateTime(defineScrq);
                CreateUploadFile();
                return;
            }

            //取本地的上传站点
            DBhelper.connectionString = GetconnectionString("OracleConn");
            string sczd = GetSczd();
            //设置连接串
            DBhelper.connectionString = GetconnectionString("DestinationConn");//ConfigurationManager.AppSettings["DestinationConn"];
            string count = "select count(*) from T90_UPLOADREGISTER where SCZD=‘" + sczd + "‘";
            if (DBhelper.GetScalar(count) == "0") //上传当天的数据
            {
                CreateUploadFile();
            }
            else //上传以前的数据
            {
                DBhelper.connectionString = GetconnectionString("DestinationConn");//ConfigurationManager.AppSettings["DestinationConn"];
                string sql = "select to_char(max(SCSJ),‘yyyy-mm-dd‘) from T90_UPLOADREGISTER where SCZD=‘" + sczd + "‘";
                lastTime = DBhelper.GetScalar(sql);//上次上传时间
                string thisTime = scrq.ToString("yyyy-MM-dd");//本次上传时间
                sql = "select to_date(‘" + thisTime + "‘,‘yyyy-mm-dd‘) - to_date(‘" + lastTime + "‘,‘yyyy-mm-dd‘) from dual";
                int ts = Convert.ToInt32(DBhelper.GetScalar(sql));//间隔天数
                scrq = Convert.ToDateTime(lastTime + " " + scrq.ToLongTimeString());
                for (int i = 0; i < ts; i++)
                {
                    scrq = scrq.AddDays(1);
                    CreateUploadFile();
                }
            }
        }