PanelBar + Postback + AJAX = error

4 posts, 0 answers
  1. Rob Heckart
    Rob Heckart avatar
    15 posts
    Member since:
    Jan 2008

    Posted 10 Apr 2008 Link to this post


    I have a PanelBar inside of a Splitter/Pane configuration that loads its data from an XML file. I want the PanelBar to postback the selected item so that codebehind can act on it and load additional things on the form. To do this smoothly, I'm trying to implement AJAX via either the Manager or Panel, but I'm getting the following error when clicking on items in the PanelBar:

    Microsoft JScript runtime error: Sys.WebForms.PageRequestManagerServerErrorException: An unknown error occurred while processing the request on the server. The status code returned from the server was: 12030

    Sometimes the error number is 404 instead of the 12030. If I take AJAX out of the form, the error goes away but the screen flicker comes back. My form code is:

    <%@ Page AutoEventWireup="false" CodeFile="Administration.aspx.vb" Inherits="JHU.APL.BCSD.TST4.AISDStaffTool.Website.Administration" 
        Language="VB" MasterPageFile="~/MasterPages/AISDStaffTool.master" Title="AISD Staff Development Tool - Administration" %> 
    <%@ Register Assembly="Telerik.Web.UI" Namespace="Telerik.Web.UI" TagPrefix="telerik" %> 
    <asp:Content ID="Content1" ContentPlaceHolderID="cphMain" runat="Server">  
        <telerik:RadSplitter ID="spltAdmin" runat="server" Orientation="Vertical" Width="100%" 
            Height="100%" Skin="Web20">  
            <telerik:RadPane ID="panePanelBar" runat="server" Width="20%" Height="100%">  
                <telerik:RadAjaxPanel ID="RadAjaxPanel1" runat="server" Height="200px" Width="300px">  
                    <telerik:RadPanelBar ID="pnbActions" runat="server" Width="100%" Height="100%" Skin="Vista" 
                        DataSourceID="xdsPanelBar" DataTextField="Text" DataValueField="Value">  
                        <CollapseAnimation Duration="100" Type="None" /> 
                        <ExpandAnimation Duration="100" Type="None" /> 
            <telerik:RadSplitBar ID="splbActions" runat="server" /> 
            <telerik:RadPane ID="paneAdminDetails" runat="server" Height="100%" Width="80%">  
        <asp:XmlDataSource ID="xdsPanelBar" runat="server" DataFile="~/App_Data/AdminPanelBar.xml" 

    Can anyone tell me how to get this to stop? I'm using Q1 2008 FUTURES.

  2. Paul
    Paul avatar
    4281 posts

    Posted 11 Apr 2008 Link to this post

    Hello Rob,

    We spent some time researching this error, but for now we can only say that the problem seems to be in the MS AJAX framework. Please take a look at this forum post for a possible solution:

    Kind regards,
    the Telerik team

    Instantly find answers to your questions at the new Telerik Support Center
  3. Milind Raje
    Milind Raje avatar
    37 posts
    Member since:
    May 2010

    Posted 15 Nov 2010 Link to this post

    I am getting a similar error when using RadTabStrip.
     Is there a solution to this yet? Or has it been fixed?
    Milind Raje
  4. Nikolay Tsenkov
    Nikolay Tsenkov avatar
    734 posts

    Posted 16 Nov 2010 Link to this post

    Hi Milind Raje,

    Is this happening by any chance only in IE browsers?
    Also, could you, please post some code reproducing this problem?

    Nikolay Tsenkov
    the Telerik team
    Browse the vast support resources we have to jumpstart 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.
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