RadListBox works slow for IE11.

2 posts, 0 answers
  1. Somnath
    Somnath avatar
    1 posts
    Member since:
    Mar 2016

    Posted 28 Mar 2016 Link to this post

    Hi Team,

    I am using RadListBox and attaching 6000 values to it.  When user clicks on select all option of the check box in RadListBox, it takes around 50 sec to check all the items in IE11 and in chrome it takes 4 sec. Can anyone suggest, how to improve the performance of RadListBox?



  2. Veselin Tsvetanov
    Veselin Tsvetanov avatar
    1230 posts

    Posted 31 Mar 2016 Link to this post

    Hi Somnath,

    Thank you for the reported issue.

    The reason for the observed difference in the performance of the control in the different browsers is the different JS engines they use. Internally in our implementation, we use the vanilla Array.indexOf() JavaScript function to iterate over the RadListBox items. When having around 6000 items and calling the above function for each of them, the Chrome V8 JS engine performs the script ca. 10 times faster that the IE 11 Chakra. At the moment this is a browser limitation for the RadListBox control.

    Veselin Tsvetanov
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