Cells become blank after scrolling the gridview?

13 posts, 0 answers
  1. Yue
    Yue avatar
    16 posts
    Member since:
    Aug 2011

    Posted 03 May 2012 Link to this post

    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!
  2. Pavel Pavlov
    Admin
    Pavel Pavlov avatar
    2039 posts

    Posted 03 May 2012 Link to this post

    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
    the Telerik team

    Explore the entire Telerik portfolio by downloading the Ultimate Collection trial package. Get it now >>

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  4. Yue
    Yue avatar
    16 posts
    Member since:
    Aug 2011

    Posted 03 May 2012 Link to this post

    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....

  5. Yue
    Yue avatar
    16 posts
    Member since:
    Aug 2011

    Posted 03 May 2012 Link to this post

    The shadow is for the property  CanUserFreezeColumns
  6. Yue
    Yue avatar
    16 posts
    Member since:
    Aug 2011

    Posted 03 May 2012 Link to this post

    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.
  7. Pavel Pavlov
    Admin
    Pavel Pavlov avatar
    2039 posts

    Posted 03 May 2012 Link to this post

    Hi Yue ,
     
    Which version of Telerik DLLs do you use ?

    All the best,
    Pavel Pavlov
    the Telerik team

    Explore the entire Telerik portfolio by downloading the Ultimate Collection trial package. Get it now >>

  8. Yue
    Yue avatar
    16 posts
    Member since:
    Aug 2011

    Posted 03 May 2012 Link to this post

    RadControls for Silverlight, v.2011.1.315.1040 (Dev) [InstallFolder]
    Have not been update for a long time...

    Need to buy the new version?
  9. Maya
    Admin
    Maya avatar
    4062 posts

    Posted 04 May 2012 Link to this post

    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
    the Telerik team

    Explore the entire Telerik portfolio by downloading the Ultimate Collection trial package. Get it now >>

  10. Saurabh
    Saurabh avatar
    3 posts
    Member since:
    Nov 2013

    Posted 11 Nov 2013 Link to this post

    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
  11. Dimitrina
    Admin
    Dimitrina avatar
    3769 posts

    Posted 11 Nov 2013 Link to this post

    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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  12. Saurabh
    Saurabh avatar
    3 posts
    Member since:
    Nov 2013

    Posted 11 Nov 2013 Link to this post

     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

     
  13. Saurabh
    Saurabh avatar
    3 posts
    Member since:
    Nov 2013

    Posted 11 Nov 2013 Link to this post

     +


    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
  14. Yordanka
    Admin
    Yordanka avatar
    634 posts

    Posted 13 Nov 2013 Link to this post

    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
    TRY TELERIK'S NEWEST PRODUCT - EQATEC APPLICATION ANALYTICS for SILVERLIGHT.
    Learn what features your users use (or don't use) in your application. Know your audience. Target it better. Develop wisely.
    Sign up for Free application insights >>
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