issue with virtualization of remote data and scrolling

3 posts, 0 answers
  1. martin
    martin avatar
    10 posts
    Member since:
    Oct 2012

    Posted 14 Dec 2012 Link to this post

    Hi, 

    I am working on a 500 000 rows grid, that is why I have used the virtualization of remote data. 
    There is a bug though, which happens only with chrome (i.e. not with firefox and IE 9, whaaaaaaat !!).

    I have made a fiddle to recreate this bug, using the kendo remote data demo.

    To see the bug, do the following steps: 
    1) put the scroll in the bottom of the grid
    2) use the mousse wheel to go up until you see the load-image.gif
    3) then, go back in the bottom with the mousse wheel, you'll see a number of data different than 11077 (which is the good one);

    if the bug does not appears, do it again a few times. 

    Do you have an idea of where does this come from ? 
    Is there something wrong in my code ? 

    here is the fiddle link: http://jsfiddle.net/johnjohn/mqPxH/1/
  2. Alexander Valchev
    Admin
    Alexander Valchev avatar
    2894 posts

    Posted 18 Dec 2012 Link to this post

    Hi Martin,

    Thank you for the feedback.
    Indeed in some cases the records may not be shown correctly. The implementation of data virtualization functionality is complex and relies on the native scroller which behaves differently in the browsers.

    I will forward this case to the team for further investigation. We are constantly trying to improve the performance, however I cannot commit an exact time-frame when and if we will be able to provide a fix.
    Please accept my apology for the inconvenience caused.

    Regards,
    Alexander Valchev
    the Telerik team
    Join us on our journey to create the world's most complete HTML 5 UI Framework - download Kendo UI now!
  3. martin
    martin avatar
    10 posts
    Member since:
    Oct 2012

    Posted 18 Dec 2012 Link to this post

    Hi Alexander, 

    thank you for your repply, please keep me informed as soon as you have news about it. 
    Thanks!
    regards

    Martin
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