Hello Peter,
Thank you for writing back.
You must subscribe to the event after the
AssociatedControl property of the range selector is set because when this property is set the RangeSelectorViewElement and the series in the range selector will be recreated (new instances for these objects will be created). This will reset any existing subscriptions or properties. This is why you should use the approach I have given you.
I hope this information helps.
Regards,
Dimitar
Telerik
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