StackedBar100SeriesDefinition tooltip

[Jingying Wu]

I'm using 2 StackedBar100SeriesDefinition, one for pass, one for fail.
How do i show on the tooltip that the percentage of pass and fail?

[Dwight]

Hi Jingying Wu,

Currently, the chart does not support such formatting. Here is a work-around you can use:

public Page()
{
    InitializeComponent();

    this.RadChart1.DefaultView.ChartArea.ItemToolTipOpening += new ItemToolTipEventHandler(ChartArea_ItemToolTipOpening);
}

private void ChartArea_ItemToolTipOpening(ItemToolTip2D tooltip, ItemToolTipEventArgs e)
{
    DataSeriesCollection series = this.RadChart1.DefaultView.ChartArea.DataSeries;

    double sum = 0;

    for (int i = 0; i < series.Count; i++)
    {
        if (series[i].Count > e.ItemIndex)
            sum += series[i][e.ItemIndex].YValue;
    }

    tooltip.Content = string.Format("{0:p2}",e.DataPoint.YValue / sum);
}

Let me know if you need further assistance.

Kind regards,
Evtim
the Telerik team

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