When scrolling using Grid Virtualization, Queries are executed twice
When scrolling data in a grid using the virtualization scrolling option, the query to fetch the next section of data will occur twice. It does not happen for every query, but it does happen all the time regardless of scrolling fast or slow.
Posted on:17 Jun 2014 07:33
Im also experiencing this issue. We are coming from slickgrid which cancels all the pending requests and you can feel the gird works much more smoothly. I think the Kendo UI team should reconsider fixing this.
Posted on:03 Apr 2014 13:06
I reported the same issue in Feb 2013 (ticket 654012).
The Kendo UI Support response follows:
"We are aware of this behavior, however the logic which virtualization follows is optimized for specific speed of scrolling and since there are pending requests and pre-fetching requests strategy, duplicate requests can happen under specific conditions when there are pending requests which take too long time and you scroll to areas which refer the same page.
I assure you that our Dev team did its best to optimize the virtualization as much as possible and there is nothing I can suggest (to) you to troubleshoot that case."
In my case, I was also experiencing duplicate requests nearly every time - unless the scroll speed was very slow.
Unfortunately, I'd suggest this has been put in the category "Won't fix".