Hello Wenli,
I tried to reproduce your issue by creating a sample page, with an RadAjaxManager which updates the RadHtmlChart every second but I wasn't able to reproduce the issue - I didn't encounter any blinking problems. What you could do in this case is try to resolve the problem by disabling the RadHtmlChart's rendering animations by taking advantage of the
Transitions property:
Could you try this approach and inform me if it is applicable in your case? If your scenario is different, could you prepare a sample page, which reproduces the problem and send it to me? Could you also specify if you get the same blinking issue on a specific browser (or version) or this behavior is the same for all browser?
Regards,
Stamo Gochev
Telerik
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