Blank rows on scrolling.

[Larry]

I have a simple gridview with a single column bound to a datatable. When scrolling by clicking on the scrollbar or dragging the thumb I get blank rows randomly displayed in the gridview (see attached file for resulting gridview after scrolling). I've tested this with the Q3 production version and the latest dev version with the same results.

 

<tgrid:RadGridView x:Name="dataGrid1" ItemsSource="{Binding ProbationerList}" AutoGenerateColumns="False" >
    <tgrid:RadGridView.Columns>
        <tgrid:GridViewDataColumn Header="PerSeq" UniqueName="PerSeq" DataMemberBinding="{Binding PerSeq}" />
    </tgrid:RadGridView.Columns>

 

 

Thanks.

[Veselin Vasilev]

Hi Larry,

This is weird. I could not reproduce the problem in a simple project. Can you please prepare a small running application which exhibits the issue and send it in a new support ticket?

Alternatively, you can try to disable the row virtualization just for the test (EnableRowVirtualization = False).


Kind regards,
Veselin Vasilev
the Telerik team

[Larry]

Turning off row virtualization did work around the issue. The blank lines occurred more often when there are more rows/columns in the grid. I've submitted a bug report with the same information.

Thanks.

[Vlad]

Hello,

 Unfortunately with provided info in your bug report (the same code snippet) it will be impossible to reproduce the issue. Can you send us small running example where we can reproduce this behavior? 

All the best,
Vlad
the Telerik team

[Rajani]

Hello,

I see this is an old post but just wanted to check with the Telerik team and see if you were ever able to repro this issue. I'm seeing the exact same problem on the grid when virtualization on row and column is turned on. Scrolling down the grid I see batches of blank rows. Turning off virtualization resolves the issue. Any suggestions?

Thanks.

[Nick]

Hi Rajani,

You can check out our latest binaries. We introdused a new rendering system for the GridView that takes care of many of our old issues, including the blank spaces. 
You can turn it on by setting GroupRenderMode to Flat.

Hope this helps! 

Regards,
Nik
Telerik

[Rajani]

Thank you Nik. I'll check out the latest version.