red x instead of chart!

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7 posts, 0 answers
  1. Mark
    Mark avatar
    132 posts
    Member since:
    Feb 2008

    Posted 19 Feb 2009 Link to this post

    Hi,
    every now and again, i receive the red X instead of the actual chart image.
    This does not happen everytime, and i cant seem to predict when and why it does this.

    Is there any reason for this and if so, how do i stop this please ?

    Many Thanks
    Mark
  2. Vladimir Milev
    Admin
    Vladimir Milev avatar
    1061 posts

    Posted 23 Feb 2009 Link to this post

    Hi Mark,

    Usually when this happens it is caused by the AppPool being recycled and occurs very rarely. Is that the case here?

    Best wishes,
    Vladimir Milev
  3. Mark
    Mark avatar
    132 posts
    Member since:
    Feb 2008

    Posted 23 Feb 2009 Link to this post

    hi Vladimir,
    Thanks for your response.

    Unfortunately, no. It seems to be happening on a very regular basis.

    Thanks
    Mark
  4. Vladimir Milev
    Admin
    Vladimir Milev avatar
    1061 posts

    Posted 26 Feb 2009 Link to this post

    Hello Mark,

    Have you tried setting UseSession to false and vice versa. Does this help? Are you using the chart in a web farm environment?

    We would love to help, but without us being able to reproduce and debug the problem I am afraid that we're very limited in what we can offer as assistance :-(. Please provide as much detail as possible. Also, if you manage to isolate the problem in a small runnable project this will be invaluable for us in solving the problem for you.

    Regards,
    Vladimir Milev
  5. Randy
    Randy avatar
    73 posts
    Member since:
    Oct 2007

    Posted 08 Jul 2009 Link to this post

    I'm encountering the same problem and I am in a web farm environment.  I thought I needed to disable UseSession.  When I did this, it went from bad to worse.   When UseSession was true, I got intermittent red x.  When I switched to false, the chart never appears.  If I browse to the individual machines that are part of the farm, it works.

    Any ideas?
  6. Mark
    Mark avatar
    132 posts
    Member since:
    Feb 2008

    Posted 01 Sep 2009 Link to this post

    Hi,
    We have moved to webfarm and are now getting red X's everywhere. Occasionally a chart will load ok.
    Some pages have 3 charts, 1 will load the rest do not. It seems to be very random.

    Is there anything i need to add to web.config etc to remove the red X ??

    Many Thanks
    Mark
  7. Vladimir Milev
    Admin
    Vladimir Milev avatar
    1061 posts

    Posted 03 Sep 2009 Link to this post

    Hi Randy,

    Since chart images are stored in the session state there are two general recommendations when using webfarm scenarios:

    1. Use "Sticky" sessions.
    2. Configure a shared state server for use by all farm servers.

    All the best,
    Vladimir Milev
    the Telerik team

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