PanelBar + Postback + AJAX = error

[Rob Heckart]

Hi,

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:RadPanelBar>
            </telerik:RadAjaxPanel>
        </telerik:RadPane>
        <telerik:RadSplitBar ID="splbActions" runat="server" />
        <telerik:RadPane ID="paneAdminDetails" runat="server" Height="100%" Width="80%">
        </telerik:RadPane>
    </telerik:RadSplitter>
    <asp:XmlDataSource ID="xdsPanelBar" runat="server" DataFile="~/App_Data/AdminPanelBar.xml"
        XPath="/Items/Item"></asp:XmlDataSource>
</asp:Content>

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

Thanks!

[Paul]

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:

http://forums.asp.net/t/1068652.aspx

Kind regards,
Paul
the Telerik team

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[Milind Raje]

I am getting a similar error when using RadTabStrip.
 Is there a solution to this yet? Or has it been fixed?
thanks
Milind Raje

[Nikolay Tsenkov]

Hi Milind Raje,

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


Regards,
Nikolay Tsenkov
the Telerik team