RadCombobox JavaScript Error

3 posts, 0 answers
  1. vina
    vina avatar
    1 posts
    Member since:
    May 2011

    Posted 01 Jun 2012 Link to this post

    Hi ,
    I have an old version ( of telerik combo box dll. This DLL works well with .Net framework 2.0. But When i am using with .Net 4.0 it gives javascript error.










    I am getting error on _14.Dispose() method. "Microsoft JScript runtime error: Object doesn't support this property or method". Please let me know why this error i am getting with .net framework 4.0 and how i can fix it.

    Thanks in advance. 

  2. Ivana
    Ivana avatar
    657 posts

    Posted 05 Jun 2012 Link to this post

    Hello Vina,

    I assume you are using the ASP.NET Classic RadControls. The following help article contains an information how to migrate form ASP.NET Classic to ASP.NET AJAX RadControls: http://www.telerik.com/help/aspnet-ajax/combobox-overview-migrating.html.

    I hope it helps.

    the Telerik team
    If you want to get updates on new releases, tips and tricks and sneak peeks at our product labs directly from the developers working on the RadControls for ASP.NET AJAX, subscribe to their blog feed now.
  3. Xafir
    Xafir avatar
    10 posts
    Member since:
    Dec 2005

    Posted 19 Jul 2012 Link to this post

    Hi Vina,

    I had the excact same problem. The reason is that ASP.NET 4.0 by default uses static client ID's for Server Controls. You can configure your site to render "legacy" client ID's by setting this entry under the system.web node in web.config:

    <pages clientIDMode="AutoID" />

    See this article:
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