c# 导出表格 api

    Exportxian() {
      var url = "/api/Ema_bilingBill/ExportXianDeclaration";
      const params = {};
      var callback = res => {
        this.common.showMsg(res);
        if (res.Result) {
          window.open(this.common.domain + res.Data);
        }
      };
      this.common.ajax(url, params, callback, true);
    }

#region 西安报关口岸导出
        /// <summary>
        /// 西安报关口岸导出
        /// </summary>
        /// <param name="reqInfo"></param>
        /// <returns></returns>
        [HttpPost]
        public ResultInfo<string> ExportXianDeclaration(BaseModel reqInfo)
        {
            var info = new ResultInfo<string>();

            try
            {
                string where = string.Empty;
                string url = string.Empty;
                string sql = string.Empty;
                //数据源
                sql = @"SELECT W.ExpressCode,'B' AS DeclareType ,P.CIQNameCn,P.CIQName,L.ProductCode,L.Weight,L.GrossWeight,P.ProductSpec,'Null' AS SaleCity,'NULL' AS Currency,L.QuantityOrder,(L.QuantityOrder * P.DeclarePrice) AS QuantityTotalprice, --AS'zongjia',
            P.DeclareUnit,W.ConsigneeName,W.CityName,W.ConsigneeAddress,W.ConsigneeMobile,W.ConsigneeIdcard,'NULL' AS PackagingType,'' AS IsWoodPackaging,'' AS IsOldArticles,'' AS IsColdchain,'' AS ProductionCountry,'' AS TradeCountry
          FROM TMS_WayBill AS W INNER JOIN
              TMS_WayBillList AS L ON W.WayBill_Id = L.WayBill_Id LEFT OUTER JOIN
              TMS_ProductInfo_Port AS P ON L.Product_Id = P.Product_Id
          WHERE W.PortName = '西安口岸' AND w.Port_Id = 7";
                DataTable WayBillList = TMS_WayBillRepository.Instance.DataContext.ExecuteDataSet(CommandType.Text, sql).Tables[];

                //模板路径
                var path = HttpContext.Current.Server.MapPath("/Upload/ImportTemplate/报关数据(西安口岸模板).xlsx");
                //指定文档
                FileInfo newFile = new FileInfo(path);
                //开启
                using (ExcelPackage pck = new ExcelPackage(newFile))
                {
                    //设定ExcelWorkBook
                    ExcelWorkbook workBook = pck.Workbook;
                    ExcelWorksheet currentWorksheet = pck.Workbook.Worksheets[];
                    if (workBook != null)
                    {
                        if (workBook.Worksheets.Count > )
                        {
                            currentWorksheet.Cells[, ].Value = Convert.ToString("分运单号");
                            currentWorksheet.Cells[, ].Value = Convert.ToString("申报类型");
                            currentWorksheet.Cells[, ].Value = Convert.ToString("物品名称");
                            currentWorksheet.Cells[, ].Value = Convert.ToString("英文物品名称");
                            currentWorksheet.Cells[, ].Value = Convert.ToString("商品编码");
                            currentWorksheet.Cells[, ].Value = Convert.ToString("净重(KG)");
                            currentWorksheet.Cells[, ].Value = Convert.ToString("毛重(KG)");
                            currentWorksheet.Cells[, ].Value = Convert.ToString("规格/型号");
                            currentWorksheet.Cells[, ].Value = Convert.ToString("产销城市");
                            currentWorksheet.Cells[, ].Value = Convert.ToString("币制");
                            currentWorksheet.Cells[, ].Value = Convert.ToString("申报数量");
                            currentWorksheet.Cells[, ].Value = Convert.ToString("申报总价");
                            currentWorksheet.Cells[, ].Value = Convert.ToString("申报计量单位");
                            currentWorksheet.Cells[, ].Value = Convert.ToString("收件人");
                            currentWorksheet.Cells[, ].Value = Convert.ToString("收件人城市");
                            currentWorksheet.Cells[, ].Value = Convert.ToString("收件人地址");
                            currentWorksheet.Cells[, ].Value = Convert.ToString("收件人电话)");
                            currentWorksheet.Cells[, ].Value = Convert.ToString("收发件人证件号");
                            currentWorksheet.Cells[, ].Value = Convert.ToString("包装种类");
                            currentWorksheet.Cells[, ].Value = Convert.ToString("是否含木质包装");
                            currentWorksheet.Cells[, ].Value = Convert.ToString("是否为旧物品");
                            currentWorksheet.Cells[, ].Value = Convert.ToString("是否未低温运输");
                            currentWorksheet.Cells[, ].Value = Convert.ToString("生产国别");
                            currentWorksheet.Cells[, ].Value = Convert.ToString("贸易国别");

                            int i = ;
                            foreach (DataRow datalist in WayBillList.Rows)
                            {
                                currentWorksheet.Cells[i, ].Value = Convert.ToString(datalist["ExpressCode"].GetString());//盘点ID
                                currentWorksheet.Cells[i, ].Value = Convert.ToString(datalist["DeclareType"].GetString());//盘点明细ID
                                currentWorksheet.Cells[i, ].Value = Convert.ToString(datalist["CIQNameCn"].GetString());
                                currentWorksheet.Cells[i, ].Value = Convert.ToString(datalist["CIQName"].GetString());
                                currentWorksheet.Cells[i, ].Value = Convert.ToString(datalist["ProductCode"].GetString());
                                currentWorksheet.Cells[i, ].Value = Convert.ToString(datalist["Weight"].GetString());
                                currentWorksheet.Cells[i, ].Value = Convert.ToString(datalist["GrossWeight"].GetString());
                                currentWorksheet.Cells[i, ].Value = Convert.ToString(datalist["ProductSpec"].GetString());
                                currentWorksheet.Cells[i, ].Value = Convert.ToString(datalist["SaleCity"].GetString());
                                currentWorksheet.Cells[i, ].Value = Convert.ToString(datalist["Currency"].GetString());
                                currentWorksheet.Cells[i, ].Value = Convert.ToString(datalist["QuantityOrder"].GetString());
                                currentWorksheet.Cells[i, ].Value = Convert.ToString(datalist["QuantityTotalprice"].GetString());
                                currentWorksheet.Cells[i, ].Value = Convert.ToString(datalist["DeclareUnit"].GetString());
                                currentWorksheet.Cells[i, ].Value = Convert.ToString(datalist["ConsigneeName"].GetString());
                                currentWorksheet.Cells[i, ].Value = Convert.ToString(datalist["CityName"].GetString());
                                currentWorksheet.Cells[i, ].Value = Convert.ToString(datalist["ConsigneeAddress"].GetString());
                                currentWorksheet.Cells[i, ].Value = Convert.ToString(datalist["ConsigneeMobile"].GetString());
                                currentWorksheet.Cells[i, ].Value = Convert.ToString(datalist["ConsigneeIdcard"].GetString());
                                currentWorksheet.Cells[i, ].Value = Convert.ToString(datalist["PackagingType"].GetString());
                                currentWorksheet.Cells[i, ].Value = Convert.ToString(datalist["IsWoodPackaging"].GetString());
                                currentWorksheet.Cells[i, ].Value = Convert.ToString(datalist["IsOldArticles"].GetString());
                                currentWorksheet.Cells[i, ].Value = Convert.ToString(datalist["IsColdchain"].GetString());
                                currentWorksheet.Cells[i, ].Value = Convert.ToString(datalist["ProductionCountry"].GetString());
                                currentWorksheet.Cells[i, ].Value = Convert.ToString(datalist["TradeCountry"].GetString());
                                i++;
                            }
                        }
                    }
                    //下载到指定位置路径文件.xlsx
                    var folder = HttpContext.Current.Server.MapPath("/Upload/download/");
                    Directory.CreateDirectory(folder);
                     url = "/Upload/download/订单数据" +DateTime.Now.ToString("yyyyMMddHHmmss")+".xlsx";
                    string pathInfoList = HttpContext.Current.Server.MapPath(url);

                    pck.SaveAs(new FileInfo(pathInfoList));
                }
                info.Result = true;
                info.Data = url;
                info.Msg = "导出成功！";
            }
            catch (Exception ex)
            {
                info.Result = false;
                info.Msg = "错误信息：" + ex.Message;
            }
            return info;
        }
        #endregion