RadAjaxLoadingPanel not presented


Hello
I'm attempting to use the control RadAjaxLoadingPanelbased on the demo http: demos.telerik.com aspnet-ajax ajax examples loadingpanel loadingimages defaultcs.aspx .
For unkown reason, it isn't working, the RadAjaxLoadingPanelcontrol isn't presented.
Note: I'm using the 2009.3.1314.35 Version.
Here is my page:
Aspx:
http: www.w3.org TR xhtml1 DTD xhtml1-transitional.dtd">
<html xmlns="http: www.w3.org 1999 xhtml">
<head runat="server">
<title>title>
<style type="text css">
.module1
{
background-color: #dff3ff;
border: 1px solid #c6e1f2;
}
style>
<Telerik:RadStyleSheetManager ID="SSH1" EnableStyleSheetCombine="true" runat="server">
<StyleSheets>
<Telerik:StyleSheetReference Assembly="Telerik.Web.UI" Name="Telerik.Web.UI.Skins.Editor.css" >
<Telerik:StyleSheetReference Assembly="Telerik.Web.UI" Name="Telerik.Web.UI.Skins.Default.Editor.Default.css" >
<Telerik:StyleSheetReference Assembly="Telerik.Web.UI" Name="Telerik.Web.UI.Skins.Window.css" >
<Telerik:StyleSheetReference Assembly="Telerik.Web.UI" Name="Telerik.Web.UI.Skins.Default.Window.Default.css" >
StyleSheets>
Telerik:RadStyleSheetManager>
head>
<body>
<form id="form1" runat="server">
<div>
<telerik:RadScriptManager ID="ScriptManager1" runat="server" >
<telerik:RadAjaxManager ID="RadAjaxManager1" runat="server">
<AjaxSettings>
<telerik:AjaxSetting AjaxControlID="Panel1">
<UpdatedControls>
<telerik:AjaxUpdatedControl ControlID="Panel1" LoadingPanelID="RadAjaxLoadingPanel1" >
UpdatedControls>
telerik:AjaxSetting>
<telerik:AjaxSetting AjaxControlID="CheckBox1">
<UpdatedControls>
<telerik:AjaxUpdatedControl ControlID="RadAjaxLoadingPanel1" >
UpdatedControls>
telerik:AjaxSetting>
<telerik:AjaxSetting AjaxControlID="DropDownList1">
<UpdatedControls>
<telerik:AjaxUpdatedControl ControlID="RadAjaxLoadingPanel1" >
UpdatedControls>
telerik:AjaxSetting>
AjaxSettings>
telerik:RadAjaxManager>
<asp:Panel runat="server" ID="ConfigurationPanel1" Title="Configurator"
Expanded="true">
<table>
<tr>
<td style="width: 200px">
<asp:CheckBox ID="CheckBox1" runat="server" Text="EnableSkinTransparency" Checked="true"
AutoPostBack="true" OnCheckedChanged="CheckBox1_CheckedChanged" ><br >
<br >
td>
<td>
Alter Background Position:<br >
<asp:DropDownList ID="DropDownList1" runat="server" AutoPostBack="true" OnSelectedIndexChanged="DropDownList1_SelectedIndexChanged">
<asp:Listitem>Bottomasp:Listitem>
<asp:Listitem>BottomLeftasp:Listitem>
<asp:Listitem>BottomRightasp:Listitem>
<asp:Listitem Selected="True">Centerasp:Listitem>
<asp:Listitem>Leftasp:Listitem>
<asp:Listitem>Noneasp:Listitem>
<asp:Listitem>Rightasp:Listitem>
<asp:Listitem>Topasp:Listitem>
<asp:Listitem>TopLeftasp:Listitem>
<asp:Listitem>TopRightasp:Listitem>
asp:DropDownList>
td>
tr>
table>
asp:Panel>
<fieldset class="module1">
<asp:Panel ID="Panel1" runat="server" HorizontalAlign="Center" Height="275px">
<asp:Button ID="Button1" runat="server" Text="Click to view the loading image" OnClick="Button1_Click"
Style="margin-top: 15px; margin-left: 15px" CssClass="qsfButtonBigger" >
asp:Panel>
fieldset>
<telerik:RadAjaxLoadingPanel ID="RadAjaxLoadingPanel1" runat="server">
telerik:RadAjaxLoadingPanel>div>
form>
body>
html>
c#:
using System;
using System.collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using Telerik.Web.UI;
public partial class Default2 : System.Web.UI.Page
{
protected void Page_Load(Object sender, EventArgs e)
{
}
protected void Button1_Click(Object sender, EventArgs e)
{
imitate longer page load
System.Threading.Thread.Sleep(2000);
}
protected void CheckBox1_CheckedChanged(Object sender, EventArgs e)
{
RadAjaxLoadingPanel1.EnableSkinTransparency = (sender as CheckBox).Checked;
}
protected void DropDownList1_SelectedIndexChanged(Object sender, EventArgs e)
{
AjaxLoadingPanelBackgroundPosition position = new AjaxLoadingPanelBackgroundPosition();
if (DropDownList1.SelectedValue == "Bottom")
{
position = AjaxLoadingPanelBackgroundPosition.Bottom;
}
if (DropDownList1.SelectedValue == "BottomLeft")
{
position = AjaxLoadingPanelBackgroundPosition.BottomLeft;
}
if (DropDownList1.SelectedValue == "BottomRight")
{
position = AjaxLoadingPanelBackgroundPosition.BottomRight;
}
if (DropDownList1.SelectedValue == "Center")
{
position = AjaxLoadingPanelBackgroundPosition.Center;
}
if (DropDownList1.SelectedValue == "Left")
{
position = AjaxLoadingPanelBackgroundPosition.Left;
}
if (DropDownList1.SelectedValue == "None")
{
position = AjaxLoadingPanelBackgroundPosition.None;
}
if (DropDownList1.SelectedValue == "Right")
{
position = AjaxLoadingPanelBackgroundPosition.Right;
}
if (DropDownList1.SelectedValue == "Top")
{
position = AjaxLoadingPanelBackgroundPosition.Top;
}
if (DropDownList1.SelectedValue == "TopLeft")
{
position = AjaxLoadingPanelBackgroundPosition.TopLeft;
}
if (DropDownList1.SelectedValue == "TopRight")
{
position = AjaxLoadingPanelBackgroundPosition.TopRight;
}
RadAjaxLoadingPanel1.BackgroundPosition = position;
}
}
Pls, I want u assist,
It is apprecited to send me the modified code snippet.


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