Google Linecharts json data source? - asp.net-mvc

Question

I use google line chart but I cant success to assing source to chart.
script
<script type="text/javascript">
// Load the Visualization API and the piechart package.
google.load('visualization', '1', { 'packages': ['corechart'] });
// Set a callback to run when the Google Visualization API is loaded.
google.setOnLoadCallback(drawChart);
function drawChart() {
var jsonData = $.ajax({
url: '#Url.Action("AylikOkumalar", "Enerji")',
dataType: "json",
async: false
}).responseText;
var rows = new google.visualization.DataTable(jsonData);
var data = new google.visualization.DataTable();
data.addColumn('date', 'Date');
data.addColumn('number', 'T1');
data.addColumn('number', 'T2');
data.addColumn('number', 'T3');
data.addRows(rows);
// Instantiate and draw our chart, passing in some options.
var chart = new google.visualization.LineChart(document.getElementById('chart_div')).draw(data, { curveType: "function",
width: 700, height: 400,
vAxis: { maxValue: 10 }
}
);
}
</script>
action
public ActionResult AylikOkumalar()
{
IEnumerable<TblSayacOkumalari> sayac_okumalari = entity.TblSayacOkumalari;
var sonuc = sayac_okumalari.Select(x => new
{
okuma_tarihi = ((DateTime)x.okuma_tarihi).ToShortDateString(),
T1 = (int)x.toplam_kullanim_T1,
T2 = (int)x.toplam_kullanim_T2,
T3 = (int)x.toplam_kullanim_T3
});
return Json(sonuc, JsonRequestBehavior.AllowGet);
}
json output
and script error:
Argument given to addRows must be either a number or an array.
I use it first time. So I dont know what should I do. How can use charts with mvc 3. there is no example enough.
Thanks.

Answer 1

data.addRows(rows);
'rows' should be an array - something like :
data.addRows([
[new Date(1977,2,28)], 1, 2, 3],
[new Date(1977,2,28)], 1, 2, 3]
]);
or your jsonData could be instead the whole structure :
{
"cols": [
{"id": "", "label": "Date", "type": "date"},
{"id": "", "label": "T1", "type": "number"}
],
"rows": [
{"c":[{"v": "Apr 24th"}, {"v": 56000} ]},
{"c":[{"v": "May 3rd" }, {"v": 68000} ]}
]
}