How to provide a custom template for series labels

The following example demonstrates how to change the appearance of series labels.

To accomplish this, it is necessary to create a System.Windows.DataTemplate that specifies the appearance of series labels, and add it to a window's resource. Then, this template can be applied to a series label via its ChartTextElement.ElementTemplate property.

Note that  the chart control displays a crosshair cursor  instead of series labels in the diagram by default.
To provide series labels customization, enable series labels (set the Series.LabelsVisibility property to true). if you wish you can disable  the crosshair cursor (set the ChartControl.CrosshairEnabled property to false).