Multicolumn RadCombobox Visible after postback using EnableLoadOnDemand

3 posts, 0 answers
  1. henk
    henk avatar
    8 posts
    Member since:
    Nov 2006

    Posted 28 Mar 2008 Link to this post

    I use a prometheus combobox. I use header and item templates. I have set EnableLoadOnDemand = true. I use the ItemsRequested eventhandler.

    The control is on the page initially, but in a hidden panel (so not rendered). After a postback the panel is visible. This combox control looks ok, but the dropdown does not work at all.

    The dropdown does work if the control is initaly rendered.

    Is there any work around to this situation, such as registering javascript during the ajax callback?

  2. Rosi
    Admin
    Rosi avatar
    2527 posts

    Posted 31 Mar 2008 Link to this post

    Hi Henk,

    Please try the latest internal build attached to this message.

    Hope this helps

    Regards,
    Rosi
    the Telerik team

    Instantly find answers to your questions at the new Telerik Support Center
  3. UI for ASP.NET Ajax is Ready for VS 2017
  4. henk
    henk avatar
    8 posts
    Member since:
    Nov 2006

    Posted 01 Apr 2008 Link to this post

    Hi Rosi,

    Thanks for the suggestion. I had already tried this hotfix build. Unfortunately the hotfix didn't solve my problem.

    I have downgraded. I use the previous version, i.e., the RadControls for ASP.NET, combobox again. The ExternalCallBackPage property of the previous RadComboBox seems to be necesary in order to implement a multicolumn combobox that is not visible on the initial page render.

    I hope future versions of the Prometheus RadComboBox will get something like an ExternalCallBackPage property. Or that loading on demand using a webservice will get support for a multicolumn combobox.

    regards
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