js导出excel功能

<div class="chaxun_btn" v-on:click="daochu(1)" style="cursor: pointer; display: inline-block; margin-left: 30px">导出</div>

daochu: function (c) {
            /// <summary>
            /// 付款导出
            /// </summary>
            /// <param name="UserID"></param>
            /// <param name="StrJson"></param>
            /// <param name="pageNo"></param>
            /// <param name="pageSize"></param>
            /// <param name="fileType"></param>
            /// <param name="bytes"></param>
            /// <returns></returns>
            //public string PaymentMaster_GetPaymentMasterListExcel(string UserID, string StrJson, int pageNo, int pageSize, int fileType, out byte[] bytes)

            this.daochuexp(1);
        },
daochuexp: function (c) {
            //取搜索条件的值
            var PaymentMaster_No = $("#Payment_fukuandanhao").val();//付款单号
            var Customer_ID = $("#cusId").val();//供应商id
            var Business_SubMan = $("#guwenId").val();//服务顾问????????????????
            var Date_Start = $("#fukuan_riqi_inp1").val();//开始日期
            var Date_End = $("#fukuan_riqi_inp2").val();//结束日期
            var Status = $("#Payment_zhuangtai").val();//支付状态
            var Payment_Type = $("#Payment_zhifu").val();//支付方式
            var Audit_SubUser = '';//审核人
            //console.log(PaymentMaster_No,Customer_ID,Business_SubMan,Date_Start,Date_End,Status,Payment_Type,Audit_SubUser)
            if (c == 1) {
                this.i = 1
            }

            var all = $("#daochunum").val();//得到隐藏域中存储的当前查询出来的总条数
            if (all == 0) {
                $.dialog.alert("列表无数据");
                return false;
            }
            var count = Number(all) / 60000;
            var count1 = Math.ceil(count);

            if (this.timei2 == 0) {
                this.timei2 = 1;
                setTimeout(this.daochuexp(), 1000);

            } else {
                //延时S秒后执行的语句
                if (this.i <= count1) {
                    var ps = 60000;
                    window.open("/Collection/PaymentMaster_GetPaymentMasterListExcel?PaymentMaster_No=" + PaymentMaster_No + "&Customer_ID=" + Customer_ID + "&Business_SubMan=" + Business_SubMan + "&Date_Start=" + Date_Start + "&Date_End=" + Date_End + "&Status=" + Status + "&Payment_Type=" + Payment_Type + "&Audit_SubUser=" + Audit_SubUser + "&pageNo=" + this.i + "&pageSize=" + ps, "exportxls", null);
                    this.timei2 = 0;
                    this.i++;
                    setTimeout(this.daochuexp(), 30000);
                } else {
                    this.retdao = 0
                }

            }
        },

//导出明细
        public void PaymentMaster_GetPaymentMasterListExcel(string PaymentMaster_No, string Customer_ID, string Business_SubMan, string Date_Start, string Date_End, string Status, string Payment_Type, string Audit_SubUser, int pageNo, int pageSize)
        {
            JsonResponse<string> jsonResponse = new JsonResponse<string>();
            try
            {
                string StrJson = "";
                PaymentMaster_Search entity = new PaymentMaster_Search();
                entity.PaymentMaster_No = PaymentMaster_No;//付款单号
                entity.UserID = user.User_ID;//
                entity.Customer_ID = Customer_ID;//供应商id
                entity.Business_SubMan = Business_SubMan;//服务顾问
                entity.Date_Start = Date_Start;//开始日期
                entity.Date_End = Date_End;//结束日期
                entity.Status = Status;//支付状态
                entity.Payment_Type = Payment_Type;//支付方式
                entity.Audit_SubUser = Audit_SubUser;//审核人
                StrJson = JsonConvert.SerializeObject(entity);
                byte[] data;
                string json=string.Empty;
                  /********Token验证********/
                using (System.ServiceModel.OperationContextScope scope = new System.ServiceModel.OperationContextScope(service.InnerChannel))
                {
                   
                    System.ServiceModel.Channels.MessageHeader headerToken = System.ServiceModel.Channels.MessageHeader.CreateHeader("token", "http://*****", user.Token);
                    OperationContext.Current.OutgoingMessageHeaders.Add(headerToken);

                    json = service.PaymentMaster_GetPaymentMasterListExcel(user.User_ID, StrJson, pageNo, pageSize, 1, out data);
                }
                Response.Clear();
                Response.ClearHeaders();
                Response.AppendHeader("Content-Disposition", "attachment;filename=" + DateTime.Now.ToString("财务付款" + "_" + Date_Start + "-" + Date_End + "yyyyMMddHHmmssms") + ".xlsx");
                Response.BinaryWrite(data);
            }
            catch
            {
                jsonResponse.status.code = 0;
                jsonResponse.status.msg = "系统异常";
            }
        }

通过js获取搜索条件的值，放到window.open问号传参给后台的方法，到数据库里查询到所需要的数据，返回给前台的下载功能