In order for the Chart to display the labels, instead of auto-generating them, you need to create a data bound chart and define two ItemMappings - one that binds the "Name " property from your data source to the DataPointMember.XCategory and another for binding the "Count" property to DataPointMember.YValue.
Please, refer to this
help topic, from which Binding the RadChart section should provide you with more information on how to bind your chart to your data source.
Hope this helps.
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