RadComboBox Just Freezes

8 posts, 0 answers
  1. Brady
    Brady avatar
    34 posts
    Member since:
    Mar 2009

    Posted 11 Sep 2009 Link to this post

    I have two examples now, my first two, where a place a RadComboBox on a web form, and populate it, but it won't drop down.  I first picked this up on a big web application project, and then on a simple little web site project, for investigating this.  In my sample project, it is the only control on the page  besides the ScriptManager, and there are rows in the data source, and it does display the first row, but it just doesn't drop down.  Any ideas on this?

    BTW, this is theh first time I've restored this project onto a new XP machine, where I previously was working on a Vista machine that died.
  2. Kamen Bundev
    Admin
    Kamen Bundev avatar
    1532 posts

    Posted 14 Sep 2009 Link to this post

    Hi Brady,

    Can you send us this example project so that we can take a look at it and help you fix that? You can open a support ticket to attach it. Thank you in advance.

    Kind regards,
    Kamen Bundev
    the Telerik team

    Instantly find answers to your questions on the new Telerik Support Portal.
    Watch a video on how to optimize your support resource searches and check out more tips on the blogs.
  3. UI for ASP.NET Ajax is Ready for VS 2017
  4. Entegral
    Entegral avatar
    13 posts
    Member since:
    Nov 2006

    Posted 06 Dec 2009 Link to this post

    For what its worth, maybe it will help someone else.
    I had the same problem on RadControls 2009 Q3 with the radcomboboxes freezing (unable to click dropdown).

    I isolated it to a RadAjaxLoadingPanel I had on the same page and the "IsSticky=true" property, Once I removed it my dropdowns suddenly worked again. 
  5. Ken Kumar
    Ken Kumar avatar
    3 posts
    Member since:
    Dec 2009

    Posted 29 Dec 2009 Link to this post

    I am using the 2009 Q3 SP1 controls and have the same problems with the radComboBox.
    IsSticky property didnt work for me. I disabled the ajax temporarily to continue working on the page by setting the EnableAJAX property to false.
    Ajax works fine for the first request and combobox freezes after that.
    Here's my scenario in detail:
    I have two comboboxes, second comboBox items changes based on the first combobox selection. So,I am populating the second comboBox items on the first comboBox's SelectedIndexChanged Event.
    In the AjaxSettings of radAjaxManager I have set the first combox box as AjaxControlID and the second comboBox as the AjaxUpdatedControl.

    <

     

    telerik:RadAjaxManager ID="RadAjaxManager1" runat="server" DefaultLoadingPanelID="RadAjaxLoadingPanel1">

     

     

    <AjaxSettings>

     

     

            <telerik:AjaxSetting AjaxControlID="cboCategory">

     

     

                <UpdatedControls>

     

     

                        <telerik:AjaxUpdatedControl ControlID="cboProducts"/>

     

     

                </UpdatedControls>

     

     

            </telerik:AjaxSetting>

     

     

    </AjaxSettings>

     

     

     

     

     

    </telerik:RadAjaxManager>

     

    <

     

    telerik:RadAjaxLoadingPanel ID="RadAjaxLoadingPanel1" runat="server">

     

     

    <img src='<%= RadAjaxLoadingPanel.GetWebResourceUrl(Page, "Telerik.Web.UI.Skins.Default.Ajax.loading6.gif") %>'

     

     

    alt="Loading.." />

     

     

    </telerik:RadAjaxLoadingPanel>

     


  6. T. Tsonev
    Admin
    T. Tsonev avatar
    2770 posts

    Posted 04 Jan 2010 Link to this post

    Hi,

    Your AJAX settings look fine and should work. Are you getting JavaScript or server-side errors? Such problem can also be caused by invalid markup on the page. In this case the RadAjaxManager might not be able to update the controls correctly. You can check the page markup by using the W3C validator service.

    I hope this helps.

    Best wishes,
    Tsvetomir Tsonev
    the Telerik team

    Instantly find answers to your questions on the new Telerik Support Portal.
    Watch a video on how to optimize your support resource searches and check out more tips on the blogs.
  7. Ken Kumar
    Ken Kumar avatar
    3 posts
    Member since:
    Dec 2009

    Posted 04 Jan 2010 Link to this post

    Hi,

    I am not getting any errors. Let me add some more detail.
    I am using the asp.net ajax controls in the sharepoint site(MOSS 2007 WSS 3.0).

    When I enable the Ajax I notice the following problems:
    1) Clicking on any control on the page for the first time sends a postback and from the next request onwards it shows ajax behavior
    2) The filter menu on the radGrid does not pop open as soon as ajax start working on the page
    3) ComboBox(es) freezes - cannot even open the drop down/select anything. Replacing comboboxes with the dropdownlist works fine.

    Any thoughts?


     

     



  8. Veselin Vasilev
    Admin
    Veselin Vasilev avatar
    2992 posts

    Posted 07 Jan 2010 Link to this post

    Hello Ken Kumar,

    Probably there is a problem with the javascript web resources. Please check the following articles on how to property deploy RadControls in MOSS and everything should work as expected.



    Kind regards,
    Veskoni
    the Telerik team

    Instantly find answers to your questions on the new Telerik Support Portal.
    Watch a video on how to optimize your support resource searches and check out more tips on the blogs.
  9. Mujeeb
    Mujeeb avatar
    1 posts
    Member since:
    Dec 2010

    Posted 03 Jun 2014 in reply to Ken Kumar Link to this post

    Please try for conditional Postback

    ​​​

     

     

     

     

    <

    telerik

    :

    RadAjaxPanel

    ID

    ="uxRadAjaxPanel"

    runat

    ="server"

    LoadingPanelID

    ="uxRadAjaxLoadingPanel"

     

     

     

     

    Width="100%" Height="100%" ClientEvents-OnRequestStart="conditionalPostback">

     

     

    function

    conditionalPostback(ajaxManager, args) {

     

     

     

     

    if

    (args.get_eventTarget().indexOf(

    "idofcontrol"

    ) > 0)

     

    args.set_enableAjax(

     

     

    false

    );

     

    }

     

    ​​​​​
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