Databound line series has empty SeriesItems

[Alvin]

Hi,

I have a set of 3 line series on my chart which is databound using a datatable. This works well and I have the 3 line series displayed as expected. 

What I'm trying to do now is to introduce new columns in my datatable which will inform if a given point in a series is special, in which case I want to highlight it (i.e. change the color of that point). I was thinking I can achieve this by adjusting the color while looping through SeriesItems. However, SeriesItems is empty.

Right after binding, I inspect the series and I see 3 series as expected. But when I inspect the SeriesItems (or Items), they are empty.

Both object below are empty after binding, yet the chart displays fine.
Chart.PlotArea.Series[0].Items

(Chart.PlotArea.Series[0] as LineSeries).SeriesItems

Any ideas?

Thanks,
A

[Alvin]

I realized I can accomplish this by binding to ColorField according to this article. This should suffice for my needs.
http://demos.telerik.com/aspnet-ajax/htmlchart/examples/functionality/custombarcolor/defaultcs.aspx

I'm still curious why items are empty for my series though.

Thanks,
A

[Danail Vasilev]

Hi Alvin,

The RadHtmlChart is created entirely on the client-side and therefore its items are not available on the server. The exception are items declared in the markup. More information is available in the Known Limitations help article.

Regards,
Danail Vasilev
Telerik

 

 

[Alvin]

Thanks.

The current solution I'm using (binding to ColorField) only supports changing the border color of the marker, are there any way I can change other attributes of the markers (i.e. size, fill, etc.) based on the bound value?

[Danail Vasilev]

Hi Alvin,

I am sorry to say that the desired feature is not supported by the RadHtmlChart.

Regards,
Danail Vasilev
Telerik