Thank you for your reply.
Digging further into this I found what might be causing this behavior. Here is a code fragment from RadChartView's drawing code:
i = 0; i <
This code is executed on every redraw and what it does is, it iterate all series that are added to the chart and creates draw parts which contain painting logic. Then it inserts draw parts at the 0th position which means that the series are drawn in exactly the reverse order as they are stored in the chart Series
collection. So if you add three series using something like this:
The result will be the blue series on the bottom, the green series in the middle and the red series on top.
In the same manner this code will produce the same drawing:
I hope this will be useful. Should you have further questions, I would be glad to help.