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Cells become blank after scrolling the gridview?

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Yue
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Yue asked on 03 May 2012, 09:08 AM
Hi All,

I meet a very strange problem. The cells in my gridview become blank after some scrolling operation?
And here attached two screenshots of my problem.

What I have done is just drap the scroll bar to the right and back to left, then the cells become blank.
And when I refresh to reload data, there are data again.

Any idea about this ?

Thanks!

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Pavel Pavlov
Telerik team
answered on 03 May 2012, 09:16 AM
Hello You,

I am trying to reproduce this behavior locally in order to check what is wrong. Have you made any customizations to RadGridView cells /rows. Do you have any specific code that tampers with the values in cells ?  Any info that can help us reproduce the problem would be appreciated.

Greetings,
Pavel Pavlov
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Yue
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answered on 03 May 2012, 10:24 AM
I have delete all the customizations columns or styleselector. And now my grid view is like:
<telerik:RadGridView Name="domainDetailGridView"
                    RowIndicatorVisibility="Collapsed"
                    ShowGroupPanel="False"
                    IsReadOnly="True"                                           
                    AutoGenerateColumns="False" Margin="5"
                    SelectionMode="Single" 
                    RowActivated="domainDetailGridView_RowActivated"
                    Grid.Row="0" Height="200">
    <telerik:RadGridView.Columns>
               <telerik:GridViewDataColumn Header="Domain" DataMemberBinding="{Binding Domain}"  Width="170"  />
        <telerik:GridViewDataColumn Header="Shown" DataMemberBinding="{Binding ShownAvg}"  />
        <telerik:GridViewDataColumn Header="Clicked" DataMemberBinding="{Binding ClickedAvg}"  />  
...    
           </telerik:RadGridView.Columns>
</telerik:RadGridView>

And for help, the blank only occurs in the cells binding with Int or double dataMember. 
I found this item in my grid view, but I have no idea what it is....

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Yue
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answered on 03 May 2012, 10:33 AM
The shadow is for the property  CanUserFreezeColumns
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Yue
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answered on 03 May 2012, 10:50 AM
Another thing is, this situation only occurs when the grid view have 1 row.
I can not easily reproduce this when the grid view have more than 1 row. Just for help.
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Pavel Pavlov
Telerik team
answered on 03 May 2012, 12:28 PM
Hi Yue ,
 
Which version of Telerik DLLs do you use ?

All the best,
Pavel Pavlov
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Yue
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answered on 04 May 2012, 03:07 AM
RadControls for Silverlight, v.2011.1.315.1040 (Dev) [InstallFolder]
Have not been update for a long time...

Need to buy the new version?
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Maya
Telerik team
answered on 04 May 2012, 07:21 AM
Hello Yue,

Indeed, my recommendation would be to test our current official release - Q1 2012 SP1. Please give it a try and let us know of the results. 

Greetings,
Maya
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Saurabh
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answered on 11 Nov 2013, 09:49 AM
HI,

I am getting same error though i have latest version  2012.1.319.1040

After few operation , when we scroll up the data goes blank.

Appreciate your help.



Thanks,
Saurabh
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Dimitrina
Telerik team
answered on 11 Nov 2013, 11:14 AM
Hi Saurabh,

Would you please test with our latest version - 2013 Q3 SP? You can also try setting GroupRenderMode="Flat".

Do you still reproduce such an issue?

Regards,
Didie
Telerik
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Saurabh
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answered on 12 Nov 2013, 05:10 AM
 Hi Didie,

 The  "GroupRenderMode" flag is not there in 2012 version. Is it part of 2013 version? 
 Please confirm.
 Also , is there any work around for 2012 version ?

 Appreciate your help.

Thanks,
Saurabh

 
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Saurabh
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answered on 12 Nov 2013, 05:22 AM
 +


As i found the GroupRenderMode is added in 2012 Q3 sp as a part of new virtualization mechanism.
I have a version  2012.1.319.1040  of telerik.

So insted of downloading the new pack , is there any work around with existing pack?


Thanks,
Saurabh
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Yordanka
Telerik team
answered on 13 Nov 2013, 08:31 AM
Hello Saurabh,

The issue cannot be avoided with a workaround and we recommend upgrading to the more recent version of the Telerik controls.
 
Regards,
Yordanka
Telerik
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Yue
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Pavel Pavlov
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Yue
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Maya
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Saurabh
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Dimitrina
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Yordanka
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