Under Review
Last Updated: 10 Mar 2020 11:45 by ADMIN
LindenauAtSOG
Created on: 30 Jan 2020 10:26
Category: GridView
Type: Bug Report
2
GridView: Sorting performance degrades when grouping is applied
As a Followup to this (Bad performance with grouping)Forumpost I managed to reproduce the issue now.
Since i cannot upload zip-files in the Forum I am doing it here.


The problem is, that a single grouping dramatically increases the time for sorting the values.
When the grouping is not present, sorting the same column is much faster.


It appears that it is related to the ammount of columns in total (not grouped).
The ammount of records is not so important, 100 (as in the attached sample) should not be significant.
Attached Files:
3 comments
ADMIN
Vladimir Stoyanov
Posted on: 09 Mar 2020 07:52

Hello Christian,

Thank you for your feedback. 

If you are referring to the RadTabControl, you can set its IsContentPreserved property to True. This way the control will keep its content state and changing the selection will not load/unload the tab's content. 

Regards,
Vladimir Stoyanov
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LindenauAtSOG
Posted on: 02 Mar 2020 12:07
The "Performancehit" is also noticeable when the list is on a tabpage that gets selected or "unselected". Both actions trigger layouting.

ADMIN
Dilyan Traykov
Posted on: 05 Feb 2020 15:19

Hello Christian,

Thank you for taking the time to isolate this issue in a sample project.

I can confirm that I was able to replicate the degraded performance at my end and will thus log this issue in our internal backlog. As a thank you for bringing this to our attention, I've awarded you with some Telerik points.

Please follow this bug report to get notified about any changes in its status.

Regards,
Dilyan Traykov
Progress Telerik

Get quickly onboarded and successful with your Telerik and/or Kendo UI products with the Virtual Classroom free technical training, available to all active customers. Learn More.