Error image.aspx

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2 posts, 0 answers
  1. maternag
    maternag avatar
    15 posts
    Member since:
    Oct 2006

    Posted 14 May 2008 Link to this post


    Hello,

    I have this error that keeps occuring.

    Do you have any idea what could be the cause of it?


    Application_Error - Offending URL: http://mywebsite/RadControls/Chart/Image.aspx - Source: System.Web - Message: Value cannot be null.
    Parameter name: key - Stack trace:    at System.Web.Caching.CacheInternal.DoGet(Boolean isPublic, String key, CacheGetOptions getOptions)
       at System.Web.Caching.Cache.get_Item(String key)
       at Telerik.WebControls.Dialogs.ChartImage.Page_Load(Object sender, EventArgs e)
       at System.Web.UI.Control.OnLoad(EventArgs e)
       at System.Web.UI.Control.LoadRecursive()
       at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
  2. Ves
    Admin
    Ves avatar
    2926 posts

    Posted 16 May 2008 Link to this post

    Hi maternag,

    RadChart stores its image in the cache for 5 minutes. If the image is requested during these 5 minutes, the timing is restarted, i.e. the image will be stored in the cache for another 5 minutes. It seems that the image has been requested after these 5 minutes have been elapsed. However, if the page with the chart has been requested, a new image should have been generated, so this error should not appear.

    How often does this error occur? Can you provide more details about your scenario? Do you have a page with RadChart and another page which points to the chart in the first one by any chance?

    Best wishes,
    Ves
    the Telerik team

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