Great stuff, thanks very much Max.

One other question. Data values displayed on the chart and in tooltips are cumulative and not the raw value for a specific row, i.e. 60 is shown for Critical, 140 is shown for Very Poor, 270 for Poor and so on.

Is there an easy way to display the actual values (60, 80, 130 ...) instead?

Many thanks

Adrian

Hello ,

I had been following Max’s suggestion in order to create a sample. Please run the sample and let me know if this is what you are looking for.

Please let me know if you have any further questions.

Thanks for your help Max and Hristo, much appreciated.

I'm really pleased with the way this is shaping up thanks to your input.

As a final refinement I am looking at displaying both the count and percentage for each data item (see attached jpeg). For example, "60 (6%)", "80 (8%)", "140 (14%)" etc.

To achieve this I'm thinking of holding the percentage as well as the count in the data table and then hooking up to the ChartDrawItem event using the e.Primitive.Row/Column to get underlying table values which I can format as required. I guess I'd look for a Text primitive where the row and column are both not -1. Not sure if I would also need to look for a specific Path value.

Does that sound reasonable or would you recommend a better approach?

Thanks

Adrian

Hi,

I just wanted to know if you were able to solve your issue based on my suggestions or you still need help? Just let me know.

Thank you.

That has sorted it out for me, thanks very much Hristo.

Adrian

Hello ,

I have modify the sample base on your code snipped and your requirements. Pease run the sample and let me know if this is what you are looking for.

Please let me know if you have any further questions.

Hi Hristo

Apologies for not having replied to your previous post.

I'm very nearly there now but have one small issue left to resolve. I have a class 'StackChartValueRender' implementing the 'IRenderLabel' interface which I'm hooking up to in the chart load event handler (see code snippets below).

When the chart is first displayed, just the DATA_VALUE_ITEM values are shown but if I move the mouse over the chart then suddenly the desired format with percentage is shown. It's as if the custom format only comes into play on some sort of refresh.

Thanks again for your help.

Adrian

In the chart load event handler:

      Hashtable stackChartValueHashTable = new Hashtable();
      stackChartValueHashTable.Add("PC_VALUE", new StackChartValueRenderer());
      ucCiGeneral.LabelHash = stackChartValueHashTable;

      ucCiGeneral.Axis.X.Labels.ItemFormat = AxisItemLabelFormat.Custom;
      ucCiGeneral.Axis.Y.Labels.ItemFormat = AxisItemLabelFormat.Custom;

      ucCiGeneral.Axis.X.Labels.ItemFormatString = "<PC_VALUE>";
      ucCiGeneral.Axis.Y.Labels.ItemFormatString = "<PC_VALUE>";

IRenderLabel class:

  public class StackChartValueRenderer : Infragistics.UltraChart.Resources.IRenderLabel
  {
    public string ToString(Hashtable context)
    {
      if (context["DATA_ROW"] != null)
      {
        double dataValueItem = (double)context["DATA_VALUE_ITEM"];
        double totalValue = (double)context["DATA_VALUE_ACCUMULATED_ELEMENT"];
        double percentage = (((dataValueItem > 0) && (totalValue > 0)) ? dataValueItem / totalValue : 0);
        return (String.Format("{0}{1}({2:0.0%})", dataValueItem, Environment.NewLine, percentage));
      }

      return ((double)context["DATA_VALUE_ITEM"]).ToString();
    }
  }