DropDownList option and Scroll

6 posts, 0 answers
  1. DenisCL
    DenisCL avatar
    69 posts
    Member since:
    Dec 2009

    Posted 05 Nov 2010 Link to this post

    Hello,

    I come to you in order to expose a problem I meet with RadDropDownList with dropDownlist option.

    In fact when I want to scroll almong the items I meet a special behavior where the dropDownlist is scroolling, but the form behind scrool too, and the dropdownlist is finally detached.

    Screenshot here

    I didn't find any issues in forum regarding this behavior. Is it already referenced at your level?

    Any information?

    Thanks for your help
    Regards

    Denis
  2. Richard Slade
    Richard Slade avatar
    3000 posts
    Member since:
    May 2009

    Posted 05 Nov 2010 Link to this post

    Hi, 

    Are you using quite an old version of the controls? 
    I see from the release notes (here) for version 2009.3.9.1203 that there was an issue fixed that describes this behaviour

    QUOTE: 
    Fixed: The handling of the OnMouseWheel event is now improved which eliminates bugs related with scrolling of container controls on which RadComboBox resides.

    I'd suggest upgrading to the latest 2010 Q2 914 Release if you are not on that one already. 
    Hope that helps
    Richard

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  4. DenisCL
    DenisCL avatar
    69 posts
    Member since:
    Dec 2009

    Posted 08 Nov 2010 Link to this post

    Hello,

    Thanks for answering.

    Actually I tried to create a simple project with dropdownlist but I couldn't manage to reproduce this behavior.

    And now when I try in my application, this behavior disappeared.
    Everything seems fine then, but it's very weird.

    Regarding the vesion I'm using, it's the 2010 Q2 sp1.
    If I can reproduce it easily, I 'll informed you asap.

    Best regards
  5. Richard Slade
    Richard Slade avatar
    3000 posts
    Member since:
    May 2009

    Posted 08 Nov 2010 Link to this post

    Morning Dennis, 

    Glad that you seem to have it sorted. 
    Best regards, 
    Richard
  6. Emanuel Varga
    Emanuel Varga avatar
    1336 posts
    Member since:
    May 2010

    Posted 08 Nov 2010 Link to this post

    Hello guys,

    This sounds to me like a SuspendLayout() problem, did you use somewhere in your app a SuspendLayout() call without a ResumeLayout(true)? The true part is very important, I've also seen some issues with the grid behaving strangely after a suspend and resume without a perform layout...

    Hope this helps, if you have any other questions or comments, please let me know,

    Best Regards,
    Emanuel Varga
  7. Peter
    Admin
    Peter avatar
    1148 posts

    Posted 11 Nov 2010 Link to this post

    Hi all,

    Yes, I agree that probably the issue is caused by a suspended layout. However, we cannot be sure until we research the case. Therefore, Denis, please open a new support ticket and send me a sample application which demonstrates the described behavior. This will allow me to assist you further.
     
    All the best,

    Peter
    the Telerik team

     

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