Google Chart Fill with Dynamic value

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i am working with google pie chart.but always used fixed value before.now i changed the value which get from dropdown list value change.i working in asp.net mvc3 razor+ajax+jquery. how can i solve this problem?

Controller:

public class HomeController : Controller
  {
      SurveyReportEntities _entities=new SurveyReportEntities();

      public ActionResult Index()
      {
          return View();
      }
      public JsonResult DropDownProductName()
      {
          var ProductList = (from p in _entities.PRODUCTS
                             select new
                             {
                                 ProductId = p.product_name,
                                 ProductName = p.product_id
                             }).ToList();

          return new JsonResult() { Data = ProductList };
      }
      public PartialViewResult GetPieChartData()
      {
          var data = _entities.sp_chartData(1).ToArray();
          return PartialView("PieChartView", data);
      }

      public PartialViewResult PieChartView()
      {
          return PartialView();
      }

Chart Page:

XML

<script type="text/javascript">


        $("#ddlProduct").change(function (){
            var pid = $("#ddlProduct").val();

          google.load("visualization", "1", { packages: ["corechart"] });
          google.setOnLoadCallback(drawSalesChart);

        function drawSalesChart() {
            $.post('@Url.Content("~/Home/GetPieChartData")', { id: 1},
                function (data) {
                    var tdata = new google.visualization.DataTable();

                    tdata.addColumn('string', 'Quertion Name');
                    tdata.addColumn('number', 'Answer');

                    for (var i = 0; i < data.length; i++) {
                        tdata.addRow([data[i].Name, data[i].Value]);
                    }

                    var options = {
                        title: "Product Survey Chart",
                        is3D: true,
                        pieSliceText: "string"
                        //pieSliceTextStyle: { color: 'white', fontName: 'Helvetica',fontSize:'12px' }
                    };

                    var chart = new google.visualization.PieChart(document.getElementById('productStatus'));
                    chart.draw(tdata, options);
                });
        }
//        });
    </script>

    <div class="dashboardItem">
        <div class="dashboardItemHeader">Product Survey</div>
        <div class="dashboardItemBody">
            <div id="productStatus" style="height:400px;width:600px">
                <div class="ajaxLoading">

                </div>
            </div>
        </div>
    </div>
</div>

Index:

@{
    ViewBag.Title = "Index";
    //Layout = "../Shared/_Layout.cshtml";
    Layout = "../Shared/_MasterLayout.cshtml";
}

<h2>Home</h2>
<br/>
@*<body>*@
  <span>Product Name :</span>
    <select id="ddlProduct">
        <option value="0">--Please Select--</option>
    </select>
    <br/>
<br/>

@Html.Partial("PieChartView","Home")

Posted 14-Jun-13 3:48am

Member 10066562

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