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ToolTip not working in RadChart when ScrollMode.ZoomAndScroll is set

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Uma Shanmugam
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Uma Shanmugam asked on 07 Mar 2010, 11:08 PM
I use a line series and the tooltip doesn't display  when  ScrollMode.ZoomAndScroll is set as follows

chart1.DefaultView.ChartArea.ZoomScrollSettingsX.ScrollMode =

ScrollMode.ScrollAndZoom;

 


When I comment the above line, tooltip is displayed in the line series.

Will this issue be fixed in official release ?

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Vladimir Milev
Telerik team
answered on 10 Mar 2010, 09:19 AM
Hi Uma Shanmugam,

Because of the way zooming and data sampling work, the data context used for showing the tooltips is not persisted. While technically tooltips cannot be directly exposed for sampled (summarized) data this doesn't mean we will not allow tooltips when zooming and scrolling is enabled - simply it will take some time as it is a separate feature.

Sincerely yours,
Vladimir Milev
the Telerik team

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Fabio Laserra
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answered on 14 Nov 2011, 05:57 PM
Hello,
have you got any news about this issue? I need tooltip in a zoomed chart.

Thanks
Fabio
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Vladimir Milev
Telerik team
answered on 16 Nov 2011, 08:34 AM
Hello Fabio Laserra,

This feature was implemented and is available with the current release of RadChart. When grouping or sampling data, as in your case, we are generating an auxiliary datacontext for each datapoint. It can be accessed through datapoint.dataitem property. It constainst a list of string/string key/value pairs. For each group descriptor you create the key value pair will indicate the name of the property by which grouping is performed and the actual group key for the item in question. This is all the information that makes sense to be exposed when grouping/sampling data. Hope this helps.

Best wishes,
Vladimir Milev
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Fabio Laserra
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answered on 16 Nov 2011, 09:24 AM
Hello Vladimir,
my chart has tooltips and I see them, but when enablezoom=true, they are not visible anymore...
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Vladimir Milev
Telerik team
answered on 21 Nov 2011, 09:14 AM
Hello Fabio Laserra,

You will need to upgrade to the latest version of RadChart in order to be able to access this feature.

All the best,
Vladimir Milev
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Fabio Laserra
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answered on 21 Nov 2011, 01:20 PM
Hello,
I need to wait because I am a DNN PRO customer.

Thanks
Fabio
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Uma Shanmugam
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Vladimir Milev
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Fabio Laserra
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