RadUpload invisible controls

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  1. neebs
    neebs avatar
    106 posts
    Member since:
    Apr 2007

    Posted 07 Apr 2011 Link to this post

    I have a RadWindow acting as a wizard in an application, and one of the pages contains a RadUpload. This has worked fine on both my development and production environment. Recently I upgraded the project from a 2009 version (I forget which one) of Telerik RadControls for ASP.NET Ajax to Q1 2011. This tests fine in development. However in the production environment, after modifying the Web Application to run ASP.NET 4 (It was 2), the RadUpload items began acting strangely. I have these in a few places and usually, they include the input area and the Select button. I am finding that they are invisible on the production server, where they are visible on the development server. I am running IIS 6 on production and IIS 7 on development. I also added a dummy RadUpload with all controls visible, and when I do this all I see are Add and Delete buttons. I also notice that this only occurs in the RadWindow page, where some other pages that contain RadUpload controls behave normally. 

    Is there something I need to do when I upgrade the production to a new version of Telerik RadControls for ASP.NET Ajax? I copied in the new Telerik.Web.UI.dll, Telerik.Web.UI.Dll.Refresh and Telerik.Web.UI.XML files. Also I sync'ed up the web.config files such that the production and development versions only differ in the App Settings sections.

    Thanks, Steve
  2. Genady Sergeev
    Genady Sergeev avatar
    1600 posts

    Posted 12 Apr 2011 Link to this post

    Hi neebs,

    I suspect that there are JavaScript errors on the page, hence RadUpload is failing to render. The most common reason for this are scripts that didn't load correctly. Please, check out the following help article, which shows how to troubleshoot the WebResource.axd handler:

    1) http://blogs.telerik.com/atanaskorchev/posts/08-02-27/web_resources_demystified_part_1.aspx
    2) http://blogs.telerik.com/atanaskorchev/posts/08-02-28/web_resources_demystified_part_2.aspx
    3) http://blogs.telerik.com/atanaskorchev/posts/08-07-18/web_resources_demystified_part_3_troubleshooting.aspx

    I hope that this helps.

    Kind regards,
    Genady Sergeev
    the Telerik team

    Browse the vast support resources we have to jump start your development with RadControls for ASP.NET AJAX. See how to integrate our AJAX controls seamlessly in SharePoint 2007/2010 visiting our common SharePoint portal.

  3. neebs
    neebs avatar
    106 posts
    Member since:
    Apr 2007

    Posted 12 Apr 2011 Link to this post


    I ended up rebuilding the application folder on the production server, which made the problem go away. At this point I don't know why this occurred, but things are working now so I will move on.

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