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How to obtain a dashboard item's client data in the ASP.NET Dashboard Control

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The following example demonstrates how to obtain client data corresponding to a particular visual element using ASPxDashboard's client-side API.

In this example, the ASPxClientDashboard.ItemClick event is handled to obtain client data and invoke the dxPopup widget with the child dxChart.

In the event handler, the ASPxClientDashboardItemClickEventArgs.GetData method is called to obtain dashboard item's client data. The ASPxClientDashboardItemClickEventArgs.GetAxisPoint method returns the axis point corresponding to the clicked card while the ASPxClientDashboardItemData.GetSlice method returns the slice of client data by this axis point.
To obtain axis points belonging to the "Sparkline" data axis, the ASPxClientDashboardItemDataAxis.GetPoints method is used. Corresponding actual/target values are obtained using the ASPxClientDashboardItemData.GetDeltaValue method.

The dxChart is used to display the detailed chart showing a variation of actual/target values over time.


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