Slider javascript errors

2 posts, 0 answers
  1. maha
    maha avatar
    44 posts
    Member since:
    Jun 2010

    Posted 09 Jul 2010 Link to this post

    I have the following page: radlistview with radslider
    <%@ Register TagPrefix="telerik" Namespace="Telerik.Web.UI" Assembly="Telerik.Web.UI" %>
    <%@ Register assembly="AjaxControlToolkit" namespace="AjaxControlToolkit" tagprefix="cc1" %>
    <%@ Page Language="VB" AutoEventWireup="false" CodeFile="Default2.aspx.vb" Inherits="Default2" %>
    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "">
    <head id="Head1" runat="server">
    <body class="BODY">
        <form runat="server" id="mainForm" >
            <asp:ScriptManager runat="server" ID="ScriptManager1" EnablePartialRendering="true"
                <telerik:RadListView runat="server" ID="RadListView1" DataSourceID="XmlDAtasource2"
                    AllowPaging="True"  PageSize="4"
                        <div id="list">
                           <table><tr><td>  <fieldset runat="server" id="itemPlaceholder" /></td>
                      <telerik:RadSlider runat="server" ID="RadSlider1" 
                             Orientation="Vertical" MaximumValue="4" Width="150px" CausesValidation="false"  OnValueChanged="RadSlider1_ValueChanged"  AutoPostBack="true"  />
                        <fieldset style="float: left; margin: 5px 5px 5px 5px; padding: 2px 2px 2px 2px;
                            background: #eeeeee" class="myClass" >
                            <img id="Img1" src='<%# Xpath("src") %>' width="90" height="120" alt="" runat="server"/>
            <telerik:RadAjaxLoadingPanel ID="RadAjaxLoadingPanel1" runat="server">
            <telerik:RadAjaxManager ID="RadAjaxManager1" runat="server">
                    <telerik:AjaxSetting AjaxControlID="RadSlider1">
                            <telerik:AjaxUpdatedControl ControlID="RadListView1" LoadingPanelID="RadAjaxLoadingPanel1" />
                    <telerik:AjaxSetting AjaxControlID="RadListView1">
                            <telerik:AjaxUpdatedControl ControlID="RadListView1" LoadingPanelID="RadAjaxLoadingPanel1" />
      <asp:XmlDataSource ID="XmlDAtasource2" runat="server" XPath="books/book" DataFile="~/generated_files/bitems.xml"/>

    and the code behind is :
    Imports System
    Imports Telerik.Web.UI
    Partial Class Default2
        Inherits System.Web.UI.Page
        Protected Sub RadSlider1_ValueChanged(ByVal sender As Object, ByVal e As EventArgs)
        End Sub
    End Class

    When i run the page i get the following javascript error :

    Line: 492
    Error: 'Sys.WebForms.PageRequestManager' is null or not an object

    And then when i try to press on the slider buttons or slide it i got a javascript error:

    Line: 950
    Error: Object expected

    What am i missing?

    I tried to run the demos you have on my pc i received the same javascriot error :  Error: 'Sys.WebForms.PageRequestManager' is null or not an object
  2. Tsvetie
    Tsvetie avatar
    1517 posts

    Posted 14 Jul 2010 Link to this post

    Hi maha,
    This error is not directly related to our controls. Please check the following resources that describe common causes for this error:

    In case the information in the provided links does not help you, please open a formal support ticket and send me a running test project that demonstrates the problem.

    All the best,
    the Telerik team
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