"Chart is busy"

[Pablo]

Hello,

I am experiencing some annoying effects with the Radchart (however, I don't know if these effects are normal or not).

My user control contains a total of 5 Radcharts, each of them having between 1 and 3 linear series (the total number is 10 series). I am  using a SampleThreshold = 400. For those charts with more than one series I am using a "nested collections" binding schema (as explained in the online documentation).

Each serie has exactly 2880 points that correspond to one point every 30 seconds for an entire day. I make an async call to an WCF service that returns the data for the series. 

The problem is that the charts render in a pretty annoying way. First only some X axis labels are shown, then the series appear but only a piece of them and with an offset respect to their X axis correct position... and so on until the chart is correctly displayed. I am not showing any label or pointmark aside from the X axis and Y axis labels, and animations are disabled. 

I'd like to know if there is any way to prevent the chart to be "pre-painted" in the screen, so that it would only be shown as it is correctly composed. Is there something like a "loading data screen" or similar? 

I am using April 2011 release. 

Thank you in advance, 

Pablo.

[Pablo]

Hi,

any update on this?

Thanks,

Pablo.

[Peshito]

Hi Pablo,

The current version of the control does not support loading indicator / IsBusy functionality. I will forward your feedback to our developers so they can consider it for one of our next releases.

Kind regards,
Peshito
the Telerik team

[Pablo]

Hi Peshito,

thanks for your response. Is there any workaround to handle this behaviour, like hiding the series until some event has fired or similar?

Thank you!

[Peshito]

Hi Pablo,

One workaround I can think of is using the RadBusyIndicator. More about this control can be found here:
http://www.telerik.com/help/wpf/radbusyindicator-overview.html

Hope that helps.

Best wishes,
Peshito
the Telerik team

[Pablo]

Hi Peshito,

Thanks for your response. I've taken a look and I don't think this control will make any difference (we were using our own loading screen) and the "chart building in progress" effects will still be there. Hopefully this feature is included for next releases. 

Regards.

[Peshito]

Hello Pablo,

I cannot give you a certain time frame when it would be included. It's up to our developers to decide when to put it on the road map. If there is anything else I can do for you, please let me know.

Kind regards,
Peshito
the Telerik team