Bug When Scrolling GridViewColumnGroups and Frozen Columns

[Murray]

We have recently updated our Telerik libraries to v2012.3.1129.40. While our experience with this is been good in general there seems to be a bug with the way GridViewColumnGroups and Frozen columns interact. One of our screens contains a RadGridView with 3 frozen columns and a lot (>50) of columns that are divided into about 12 groups. Because of the number of columns the users requested we allow them to show/hide the columns on a group by group basis which we have done (we have check boxes to control the visibility of the different groups). This worked fine prior to the upgrade but no longer seems to work correctly.

We can show/hide the groups (by showing/hiding the child columns causing the parent groups to show/hide) as before but if we show a group (either for the first time or after it has been previously hidden) it does not  function correctly when the grid is scrolled horizontally. Instead of scrolling "under" the frozen columns as expected the group header remains stuck against the frozen column while the column headers and the data rows continue to scroll as expected. If I remove the frozen columns the horizontal scrolling works as expected.

This bug means that we are unable to have Frozen columns which is a critical in a grid with so many columns

Thanks,

Murray

[Vera]

Hello Murray,

 
Actually, we had a similar issue which was resolved. Will it be possible to download our Latest internal Build and to give it a try?

Let us know in case you experience any other problems.

Kind regards,
Vera
the Telerik team

[Murray]

Ok, thanks. I'll give that a try.

Thanks,

Murray

[Tyler]

We seem to be having the same issue.  We are adding and removing columns through C#, defined by checkboxes, similar to above. We have a few columns frozen, which is causing the Common Column headers to not remain in sync with the columns they are associated with.  If we set the FrozenColumnCount to zero, all headers are in sync, even scrolling across dozens of columns with 5 or 6 group headers.  We recently updated our binaries to version 2013.2.724.45, the most recent binaries we have since our license expired,, thinking that would fix the issue we first noticed from the 2012 binaries we had before.  Has this issue been fixed in a more recent version?  

[Vera]

Hi Tyler,

Indeed, this issue should be resolved. Please download our latest official version - Q1 2014 SP1 and give it a try.

Regards,
Vera
Telerik

 

 

[rd]

Hello Vera,

I'm using the latest official version -Q3 2014 and still having trouble with the horizontal scroll, grouping headers and frozen columns.

I send an attachment to be able to demonstrate the problem and try to solve it.

thanks,

[Vera]

Hi,

May I ask you to send a simple runnable project demonstrating the problem you experience? You will need to open a support ticket in order to be able to attach a project.

Thank you in advance. 

Regards,
Vera
Telerik

 

 

[rd]

Hi Vera,

As requested, i send a project where you can play the situation that I report.

thanks  

ps: You have to change the extension to .zip.

[Vera]

Hi,

Thank you for the project sent. As it turns out, this issue has already been logged into our Feedback Portal under Merged Headers (ColumnGroup) Misalignment after Scrolling. You can vote for it and follow its status.


Please excuse us for the inconvenience caused.

Regards,
Vera
Telerik

 

 

[rd]

Hi Vera,

I can vote for it on your Feedback Portal, but I see that the problem was detected in 2013 and is "Approved" since we are in 2015 and not yet corrected, then my vote will not influence the correction of the problem.

I have the problem and I need to fix it, can you help me?

thanks,

[Vera]

Hi,

I cannot suggest any workaround for the issue. I raised its priority in our internal issue tracking system but I cannot commit to any specific date or release where this problem will be resolved.

Regards,
Vera
Telerik

 

 

[rd]

Hi,

I understand that you cannot commit to a specific date, but it's very urgent me for to have this problem solved as soon as possible.

what is the SLA for this type of incident? 

We need to finish the application until the middle of next month (February 16).

thanks for your help,

[Nick]

Hello,

The problem is quite deep into the existing layout logic of the ColumnGrops Arange logic and fixing it in our existing implementation is not possible. The fix consist of redesigning the entire rendering engine for the merged headers which is why it takes longer time to fix. The plan is to introduce a new render mode for the Headers much like the GroupRenderMode property. The idea is to keep both render modes so no breaking changes are introduced.
Due to the nature of the work required and the time it would take to complete it, we cannot commit to a certain time frame at which the work will be done, however we will do our best to include it in our main planning for our Q2 release.

Regards,
Nick
Telerik