Getting Argument Out of the Range Exception when Enabling RowVirtulization

4 posts, 0 answers
  1. Prakhar
    Prakhar avatar
    3 posts
    Member since:
    Feb 2013

    Posted 16 Jul 2013 Link to this post

    Hi,
    I am using RadTreeList View, when i set EnableRowVirtualization= "False" every time i am getting one extra row after clicking the Expandar.
    I am not understanding why RowVirtulization is adding an Extra Row and how to get Rid of this Issue. 
  2. Yoan
    Admin
    Yoan avatar
    1180 posts

    Posted 18 Jul 2013 Link to this post

    Hello Prakhar,

    Thank you for the feedback.

    Indeed, we are aware of this issue and we are currently working to provide a fix for it. However, we cannot commit with any specific date or release when the fix will be available. 

    May I ask you to share what your final goal is? Why do you need to use TreeListView without virtualization?

    Regards,
    Yoan
    Telerik
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  3. Russ
    Russ avatar
    27 posts
    Member since:
    Oct 2008

    Posted 07 Aug 2013 Link to this post

    We are having the same issue.  It seems re-enabling virtualization does fix the issue, but forces us to live with the reason we used it in the fist place.   I found this post that indicates it is still an issue in the latest version, so I just wanted to drop a note here, because the it seems the OP did not follow through and explain his reasons.

    We had originally found that due to the very large size our TreeListView becomes sometimes, the scrolling was becoming choppy (i.e. no longer smooth, and when scolling with the mouse - the mouse would get too far ahead of the scroll).    Our data sets have a large number of data columns, and within many of those are special CellEditTemplates, which is likely part of the reason - but those were requirements of the user group.  So, when the number of rows gets large and/or the number of levels in the tree structure gets deep, the choppiness starts impacting usability.  

    It seems like this performance has improved over the last few updates (we are still a little behind on these, due to other restraints), so it is not as bad as when this project was originally created, but we still hope to see the fix here.

    Thanks,
    Russ
  4. Yordanka
    Admin
    Yordanka avatar
    634 posts

    Posted 08 Aug 2013 Link to this post

    Hello Russ,

    The problem with additional row when expand RadTreeListView item is resolved in our latest official version - Q2 2013 SP1. Please give it a try and let us know if you find any problems.

    As to the problems you experience when row virtualization is turned on, Tips and Tricks topic can help.
     
    Regards,
    Yordanka
    Telerik
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