I am afraid this behavior cannot be controlled through RadChart API. It is based on the way the browser handles image maps -- this is how tooltips are implemented in RadChart. Basically, if areas in an image map are overlapping, the browser takes into account the first area found. In your scenario the Bar series is defined before the Line series, hence the behavior you observe.
, given that the ID of the control is RadChart1
. Then this function should reverse the areas in the image map, so that the areas for the line chart appear before those for the bars. I have attached a simple project to demonstrate this.
the Telerik team
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