ChartSeriesItem Visible Property

[Lam]

For testing, I have a pie chart with 8 items.  The YValue of the item will be set in the NeedDataSource event. Since I am using the Telerik skin, the first item is green, second is yellow, third is red, and so on.  I need to have these color consistent since I will be referencing the color elswhere on the report.

Item1 = green
Item2 = yellow
Item3 = red
Item4 = blue

If I add only the items that have non-zero value the color will not be consistent.   For example, Item2 is zero then if I add Item1 then Item3:

Item1 = green
Item3 = yellow
Item4 = red
Item5 = blue

I need to make some of the items invisible.  However, setting Visible = false does NOT hide the item.  Suggestion?

I also tried the Remove() method but I get "An eroor occured while processing Chart... Object reference not set to an instance of an object."

foreach (ChartSeriesItem i in responseSeries.Items)
{
    ...
    if (i.YValue == 0)
    {
        i.Visible = false;
    }
   ...
}

 

[Peter]

Hi Lam,

The chart's automatically created series are generated in the report processing and they are immutable. Thus our suggestion is to setup the chart series based on data as elaborated in the Creating Chart Programmatically help article. 

All the best,
Peter
the Telerik team