Completed
Last Updated: 18 May 2015 12:57 by JAIME
Currently it is not possible to add null-able series items in RadHtmlChart in the markup or programmatically. If a null-able item is added it is omitted and is replaced by the next series item from the current Series. The workaround is to either data bound the chart to a data source or convert the null-able values to zeros:

C#:

        decimal? nullValue = null;
        if (nullValue == null)
        {
            nullValue = 0;
        }

        ColumnSeries colSeries2 = RadHtmlChart1.PlotArea.Series[1] as ColumnSeries;
        colSeries2.SeriesItems.Add(39);
        colSeries2.SeriesItems.Add(nullValue);
        colSeries2.SeriesItems.Add(3);
Completed
Last Updated: 09 Nov 2015 12:52 by Capital
When Series are created programmatically, Axes settings are not preserved after postback. The workaround is to create an empty series in the markup. For example:

        <telerik:RadHtmlChart ID="RadHtmlChart1" runat="server">
...
            <PlotArea>
                <YAxis>...</YAxis>
                <XAxis>...</XAxis>
                <Series>
                    <telerik:ScatterLineSeries Name=" ">
                        <Appearance FillStyle-BackgroundColor="Transparent"></Appearance>
                    </telerik:ScatterLineSeries>
                </Series>
            </PlotArea>
        </telerik:RadHtmlChart>
Completed
Last Updated: 15 May 2013 09:31 by ADMIN
In a chart that has stacked bar series and a line series the bar series become column series when the chart is data-bound.

The solution is to declare the BarSeries above the LineSeries as follows:
            <%--BarSeries are declared above the LineSeries--%>
            <telerik:BarSeries Name="B1">
                <Items>
                    <telerik:SeriesItem YValue="10" />
                    <telerik:SeriesItem YValue="20" />
                    <telerik:SeriesItem YValue="30" />
                </Items>
            </telerik:BarSeries>
            <%--LineSeries are declared below the BarSeries--%>
            <telerik:LineSeries Name="L1">
                <Items>
                    <telerik:SeriesItem YValue="15" />
                    <telerik:SeriesItem YValue="10" />
                    <telerik:SeriesItem YValue="20" />
                </Items>
            </telerik:LineSeries>
Completed
Last Updated: 07 Jun 2013 05:36 by ADMIN
ADMIN
Created by: Danail Vasilev
Comments: 0
Category: HtmlChart
Type: Bug Report
2
Currently the Hay skin sets white color for the  title, axes labels and legend in RadHtmlChart.
For the time being the color of the mentioned elements can be changed through the TextStyle property - http://www.telerik.com/help/aspnet-ajax/htmlchart-appearance-labels-titles-font-settings.html.
Completed
Last Updated: 26 Feb 2015 17:26 by ADMIN
Currently when LineSeries Item's YValue is smaller than the BarSeries/ColumnSeries Item's value and both Series Items share the same category, the BarSeries/ColumnSeries Item is the one that receives the mouseover event, so only the bar/column item tooltip is shown. It is not possible to hover over the marker for the  LineSeries and trigger client-side event handlers or show its tooltip. The LineSeries can be hovered/clicked only outside of the area of the Bar/Column Item.
Completed
Last Updated: 30 Sep 2018 19:30 by Karen
For the time being the following workaround can be used:

JavaScript:

    <script>
        function pageLoad() {
            var chart = $find("<%=RadHtmlChart1.ClientID%>");
            chart._chartObject.options.series[0].missingValues = "Gap";
            chart.repaint();
        }
    </script>
ASPX:

        <telerik:RadHtmlChart ID="RadHtmlChart1" runat="server">
            <PlotArea>
                <Series>
                    <telerik:LineSeries MissingValues="Gap">
                        <SeriesItems>
                            <telerik:CategorySeriesItem Y="30" />
                            <telerik:CategorySeriesItem Y="10" />
                            <telerik:CategorySeriesItem />
                            <telerik:CategorySeriesItem Y="30" />
                        </SeriesItems>
                    </telerik:LineSeries>
                </Series>
            </PlotArea>
        </telerik:RadHtmlChart>
Won't Fix
Last Updated: 19 Jan 2016 16:48 by ADMIN
Currently labels of SeriesItems with values greater or equal  to the YAxis MaxValue are being cut:

    When chart title is not set.
    AND the labels position is set to Above for AreaSeries, LineSeries, ScatterSeries and ScatterLineSeries.
    OR the labels position is set to outsideEnd for ColumnSeries.
    In FireFox, Opera and WebKit browsers.

For the time being the chart title can be set with space character.
Completed
Last Updated: 27 Apr 2015 12:04 by ADMIN
ADMIN
Created by: Danail Vasilev
Comments: 3
Category: HtmlChart
Type: Bug Report
3
Currently a long legend in RadHtmlChart overflows the PlotArea under IE, while in the rest browsers it is cut. The workaround is to hide the legend and create a custom one in a styled div (e.g. KendoUI demonstrates such an example here - http://demos.kendoui.com/dataviz/bubble-charts/index.html)
Won't Fix
Last Updated: 10 Jun 2015 09:21 by ADMIN
Currently the datasource columns which have space in their name cannot be passed to a databound RadHtmlChart. Add the ability to handle the spaces in the names of these columns.
Completed
Last Updated: 04 Jul 2014 12:27 by ADMIN
Created by: Paul
Comments: 2
Category: HtmlChart
Type: Bug Report
1
When a pie chart is rendered with large labels they may be clipped because the pie chart is not sized correctly.  When the legend is enabled the pie chart sizes correctly to handle long labels.
Completed
Last Updated: 06 Jan 2016 12:07 by ADMIN
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