C# JS 前后端互传数据

---恢复内容开始---

后端：

 public void ProcessRequest(HttpContext context)
 {
 context.Response.ContentType = "text/plain";
 string IMEI = context.Request.QueryString["ID"];
 string currentDateTime = DateTime.Now.ToShortDateString();
 string cmd = "select TOP 20 温度,电池电压,电池电量,采集时间 from View_GPRS where 采集时间>'" + currentDateTime + "' and 设备号 ='" + IMEI + "' order by 采集时间 desc";
 // 访问数据库
 using (SqlDataReader reader = SqlHelper.ExcuteDataReader(cmd))
 {
 if (reader.HasRows)
 {
 while (reader.Read())
 {

 if (reader[].ToString() == ""||reader[].ToString()==""|| reader[].ToString()==""|| reader[].ToString()=="")
 {
 continue;
 }

 //在第一个位置插入元素，相当于倒序排列，将元素从旧到新排序
 energyInfo.Temp.Insert(,Convert.ToDouble(reader[]));//温度
 energyInfo.BatteryVoltage.Insert(,Convert.ToDouble(reader[]));//电压
 energyInfo.BatterySOC.Insert(,Convert.ToDouble(reader[]));//电量
 DateTime colleTime = Convert.ToDateTime(reader[].ToString()) ;
 string sss = colleTime.ToString("T");
 energyInfo.CollectionTime.Insert(, colleTime.ToString("T"));//采集时间

 }
 }
 }
 object JSONObj = JsonConvert.SerializeObject(energyInfo);

 //数据库内容转成json
 context.Response.Write(JSONObj);

 }

前端：

if (selectedLayer === getLayerByTitle('企业')) {
       console.info('点击餐车图层上的点，跳转页面到折线图');
      var IMEI = dic_values['IMEI'];
      //跳转，将feature的属性数据传递到新页面
     //window.location.href = 'Details.aspx?name=' + name;
      window.open('Details.aspx?name=' + IMEI);
}

//获取url中的参数
        function getQueryParams() {
            var search = window.location.search;
            var params = {};
            if (search != "") {
                search.slice(1).split("&").forEach(
                    function (val) {
                        var arr = val.split("=");
                        params[arr[0]] = arr[1];
                    }
                );
            }
            return params;
        }
 //获取url中的参数
        var params = getQueryParams();
        var query = decodeURI(params['name']);

 $.ajax({
                type: "GET",
                url: ' Handler2.ashx?ID=' + query,
                contentType: "application/json",
                data: {},
                success: function (res) {
                     jsondata = JSON.parse(res);
                    console.log('取到设备的温度，电压，电量数据');
                    console.log(jsondata)

                    option1.series[0].data = jsondata.Temp;//餐车温度
                    option1.xAxis[0].data = jsondata.CollectionTime;
                    option2.series[0].data = jsondata.BatteryVoltage;//电池电压
                    option2.xAxis[0].data = jsondata.CollectionTime;
                    option3.series[0].data = jsondata.BatterySOC;//电池电量
                    option3.xAxis[0].data = jsondata.CollectionTime;//采集时间
                    myChart1.setOption(option1);
                    myChart2.setOption(option2);
                    myChart3.setOption(option3);
                },

            });

　　

---恢复内容结束---