Highchart with asp.net using asp.net ashx

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C#

Ajax

ASHX

Dear all, could u help me how can this happen? I am newbie by the way

I want use java-script get data from SQL by ASHX Handler, but nothing come out

In ashx code :
*******************

using System;
using System.Web;
using System.Web.SessionState;
using Newtonsoft.Json;
using Newtonsoft.Json.Linq;
using System.Data.Linq;
using System.Linq;
public class highChartm1 : IHttpHandler,IReadOnlySessionState {    
    public void ProcessRequest (HttpContext context) {
        DataClassesDataContext dc = new DataClassesDataContext(); //linq to sql clsaa
        context.Response.ContentType = "text/plain";
        var qr3 = (from x in dc.A_1_1
                   select new {x.CH1, x.CH2 }).Take(10);          //sent to client side data
        string jsonString = JsonConvert.SerializeObject(qr3); //using Json.net
        context.Response.Write(jsonString);
    }
 
    public bool IsReusable {
        get {
            return false;
        }
    }
}

In html javascript
*******************************************************

var options;
var mydata1 = [];
var mydata2 = [];
var TimeStamp = [];
$(document).ready(function () {
    var url = "WeiAshx/highChartm1.ashx";
    options = {
        chart: {
            renderTo: 'container',
            type: 'spline'
        },
        credits: {
            enabled: false
        },
        title: {
            text: 'xxx'
        },
        series: [{
            name: 'mydata1'
        }, {
            name: 'mydata2'
        }]
    };
    $.ajax({
        url: 'WeiAshx/highChartm1.ashx',
        dataType: "json",
        success: function (data) {
            <big>>for (i in data) {
                mydata1[i] = data[i].CH1;
                mydata2[i] = data[i].CH2;
            }
            options.series[0].data = mydata1;
            options.series[1].data = mydata2;</big>
            var chart = new Highcharts.Chart(options);
        },
        cache: false
    });
});}