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POHow do I update a KendoUI chart via javascript JSON?
 

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  1. POHow do I update a KendoUI chart via javascript JSON?
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    <p>So I have a chart which is configured using the MVC style configuration...</p> <pre><code>@(Html.Kendo().Chart&lt;DIMVC.ViewModel.CompanyProduction&gt;(Model.CompanyProduction) .Name("Chart") .Title("Files sent") .Legend(legend =&gt; legend .Position(ChartLegendPosition.Bottom) ) .ChartArea(chartArea =&gt; chartArea .Background("transparent") ) .SeriesDefaults(seriesDefaults =&gt; seriesDefaults.Line().Style(ChartLineStyle.Smooth) ) .Series(series =&gt; { series.Line(model =&gt; model.SentFiles).Name("Sent Files"); ... { lots more series added here } } .CategoryAxis(axis =&gt; axis .Categories(model =&gt; model.MonthDisplay) .Labels(labels =&gt; labels.Rotation(-90)) ) .ValueAxis(axis =&gt; axis.Numeric() .Labels(labels =&gt; labels.Format("{0:N0}")) .MajorUnit(10000) ) .Tooltip(tooltip =&gt; tooltip .Visible(true) .Format("{0:N0}") ) .Events(e =&gt; e .SeriesClick("onSeriesClick") ) </code></pre> <p>)</p> <p>I also have a slider on the page. When the slider value is changed I handle this event.</p> <pre><code>@(Html.Kendo().RangeSlider() .Name("yearRange") .Min(2000) .Max(DateTime.Today.Year) .SmallStep(1) .LargeStep(5) .Values(Model.MinYear, Model.MaxYear) .Events(e =&gt; e.Change("yearRangeChange")) ) </code></pre> <p><em><strong>javascript method</em></strong></p> <pre><code>function yearRangeChange(e) { var url = "/FetchData/"; $.ajax({ type: "GET", url: url, data: { startYear: e.values[0], endYear: e.values[1] }, dataType: "json", success: function (json) { $("#DINETChart").kendoChart({ dataSource: { data: json } }); var chart = $("#DINETChart").data("kendoChart"); chart.refresh(); } }); } </code></pre> <p>now when the chart is updated the grid is just blank.</p> <p>The json request is successfully called and the data is retrieved. but after the chart is populated the chart is blank.</p> <p>has anyone got any suggestions?</p> <p><strong>* EDIT *</strong></p> <p>adding a sample of the JSON returned</p> <p><code>"[{\"CompanyID\":1,\"Year\":2011,\"Month\":8,\"SentFiles\":1666,\"ReceivedFiles\":1632,\"SentData\":12803.674593292486,\"ReceivedData\":11908.047586546765,\"Note\":null,\"MonthDisplay\":\"Aug\",\"CompanyDisplay\":null},{\"CompanyID\":1,\"Year\":2013,\"Month\":10,\"SentFiles\":21004,\"ReceivedFiles\":20387,\"SentData\":157376.825542573,\"ReceivedData\":152878.87845794103,\"Note\":null,\"MonthDisplay\":\"Oct\",\"CompanyDisplay\":null},{\"CompanyID\":1,\"Year\":2013,\"Month\":4,\"SentFiles\":9989,\"ReceivedFiles\":9880,\"SentData\":74913.53277995327,\"ReceivedData\":75145.16331588416,\"Note\":null,\"MonthDisplay\":\"Apr\",\"CompanyDisplay\":null},{\"CompanyID\":1,\"Year\":2013,\"Month\":11,\"SentFiles\":25956,\"ReceivedFiles\":25249,\"SentData\":196155.8977337967,\"ReceivedData\":189320.44546897494,\"Note\":null,\"MonthDisplay\":\"Nov\",\"CompanyDisplay\":null}]"</code></p> <p>I would also like to point out that if I add this</p> <pre><code>.DataSource(ds =&gt; ds.Read(read =&gt; read.Action("FetchData", "Home", new { startYear = 2012, endYear = 2013 }) )) </code></pre> <p>to my chart configuration, this will populate the chart fine, without using the page <code>Model</code>. i.e. The data is correct for the chart.</p>
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    1. COwhat does the returned JSON look like?
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