ItemClick event and ItemMapping

[Θανάσης]

Hi

Let's say I have a bar-chart with two bar series. An AxisX (Product categories) and Cost and Sales (on the same AxisY).
On ItemClick event I'd like to determine which bar the user clicks. Cost or Sales?
I can find X and Y values from event args but I cannot determine if it is the Cost-bar or Sales-bar.

How can I do this?

[Evgenia]

Hi Thanasis,

Thanks for contacting us. To be able to get the name of the Series you should first set it - you can achieve this by giving some name to LegendLabel property. On ItemClick you will know whether you clicked "Cost" or "Sales" by getting it's LegendLabel. Here is some sample showing this:

InitializeComponent();
         //Bar Chart Series 1
         DataSeries barseries1 = new DataSeries();
         barseries1.LegendLabel = "Cost";
         barseries1.Definition = new BarSeriesDefinition();
         barseries1.Add(new DataPoint() { YValue = 154, XCategory = "Jan" });
         barseries1.Add(new DataPoint() { YValue = 138, XCategory = "Feb" });
         barseries1.Add(new DataPoint() { YValue = 143, XCategory = "Mar" });
         barseries1.Add(new DataPoint() { YValue = 120, XCategory = "Apr" });
         barseries1.Add(new DataPoint() { YValue = 135, XCategory = "May" });
         RadChart1.DefaultView.ChartArea.DataSeries.Add(barseries1);
         //Bar Chart Series 2
         DataSeries barSeries2 = new DataSeries();
         barSeries2.LegendLabel = "Sales";
         barSeries2.Definition = new BarSeriesDefinition();
         barSeries2.Add(new DataPoint() { YValue = 45, XCategory = "Jan" });
         barSeries2.Add(new DataPoint() { YValue = 48, XCategory = "Feb" });
         barSeries2.Add(new DataPoint() { YValue = 53, XCategory = "Mar" });
         barSeries2.Add(new DataPoint() { YValue = 41, XCategory = "Apr" });
         barSeries2.Add(new DataPoint() { YValue = 32, XCategory = "May" });
         RadChart1.DefaultView.ChartArea.DataSeries.Add(barSeries2);
         RadChart1.DefaultView.ChartArea.ItemClick += new EventHandler<ChartItemClickEventArgs>(ChartArea_ItemClick);
     }
     private void ChartArea_ItemClick(object sender, ChartItemClickEventArgs e)
     {
         string name = e.DataSeries.LegendLabel;
         //textBlock1.Text = name;
     }

Hope this helps.

Sincerely yours,
Evgenia
the Telerik team