[Solved] The index WAS off limits . It Must Be not negative and Must Be Less Than the size of the collection.

[EssMus]

hi,

i'm using code from documentation 

http://www.telerik.com/help/aspnet-ajax/htmlchart-important-changes-regarding-the-series-declaration.html

 

 Programmatic creation of the Area chart with the SeriesItems collection.

and i have error wich it's apear in pic  

plz help

[Danail Vasilev]

Hi Essoufi,

It seems that the chart doesn't have a series with zero index. You can try to add a series instead of accessing a non-existing one:
ASPX:

<telerik:RadHtmlChart runat="server" ID="Chart1" Width="600px" Height="400px">
</telerik:RadHtmlChart>

C#:

protected void Page_Load(object sender, EventArgs e)
{
    AreaSeries areaSeries = new AreaSeries();
    CategorySeriesItem csi1 = new CategorySeriesItem() { Y = 20 };
    CategorySeriesItem csi2 = new CategorySeriesItem() { Y = 35 };
    CategorySeriesItem csi3 = new CategorySeriesItem() { Y = 40 };
    areaSeries.SeriesItems.Add(csi1);
    areaSeries.SeriesItems.Add(csi2);
    areaSeries.SeriesItems.Add(csi3);
    Chart1.PlotArea.Series.Add(areaSeries);
}

Regards,
Danail Vasilev
Telerik