Chart Blinks on Ajax Refresh

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2 posts, 0 answers
  1. Brian Azzi
    Brian Azzi avatar
    65 posts
    Member since:
    Mar 2010

    Posted 17 Jun 2010 Link to this post

    Hello,

    I have a RadChart that I am rendering on page load. At regular intervals (5-10 seconds for example), I want to "refresh" the data contents of the chart. I am currently using a RadAjaxManager instance, and am using ajaxManager.ajaxRequest to initiate the callback request.

    This works fine, but has one very visual drawback... the chart basically "blinks" during every refresh. (I can add a loading panel, but this in and of itself doesn't work very well for items that are constantly being refreshed at regular intervals).

    Does anyone know of a way to prevent this? (The grid control for example does not "flash" or "blink" upon a rad ajax postback). Is there a way to "trick it by having two charts and only making the refreshed one visible after the callback is finished / basically swapping them in and out (pretty hacky, I know, but I have a lot of time invested in making this chart work!!!). 

    Thanks in advance!
    -Brian
  2. Ves
    Admin
    Ves avatar
    2926 posts

    Posted 22 Jun 2010 Link to this post

    Hi Brian,

    Please, find attached a small example, showing how to switch images. You can change the timeout constant as per your environment.

    Kind regards,
    Ves
    the Telerik team
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