Multi-color bars for one series

[Ahmed]

Hello,

I am programatically drawing a bar RadChart to display ratings count for some products. The valid ratings that I use are 0, 1, 2, 3, 4, 5. I count the rated products and plot them against the rating. At the end, I get six bars (0 to 5), which is correct. The thing that I want to do is always show the bar for rating 0 in RED color. Rest continues to work skin-based.

Someone told me to use another series for rating 0 only and give it red color but I don't want to use it as it will move the bars of my first series to a side to make place for the bars for the second one however the second series would never have any value for any other rating except 0.

Can you tell me a solution in which I achieve this in one series only?

[Petar Marchev]

Hi Ahmed,

One way to achieve this is by attaching to the RadChart's ItemDataBound event. You can put your custom logic on coloring in the event handler.

Here is some code:

private void CreateProgramaticallyRadChart()
{
     RadChart radChart = new RadChart();

     radChart.ItemDataBound += new EventHandler<ChartItemDataBoundEventArgs>(radChart_ItemDataBound);

     radChart.DataSource = items;
     radChart.DataBind();
}
void radChart_ItemDataBound(object sender, ChartItemDataBoundEventArgs e)
{
    if (e.SeriesItem.XValue == 0)
    {
        e.SeriesItem.Appearance.FillStyle.MainColor = System.Drawing.Color.Red;
    }
}

I hope this helps.

All the best,
Petar Marchev
the Telerik team

[Ahmed]

Hi Petar,

Thanks a lot for your reply. Although it didn't help me directly as I'm not binding the chart to a source but still it showed me the way and I managed to get the desired result.

Thanks again :)