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Version Q2 2011 released 07/12/2011
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Ajax / Loading User Controls

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  • Loading user controls dynamically is one of the most common scenarios in ASP.NET programming. This example demonstrates how to achieve the desired functionality in a straightforward and simple way with the RadAjaxPanel control. You can also use the RadAjaxManager for the same purpose -- you will need to ajax-enable a standard asp:panel and then load the user controls within.

Source Code

C# VB.NET
Show code in new window Demo isolation steps
  • <%@ Page Language="c#" CodeFile="DefaultCS.aspx.cs" AutoEventWireup="false" Inherits="Telerik.AJAXExamplesCSharp.AJAX.Examples.Common.LoadingUserControls.DefaultCS" %>

    <%@ Register TagPrefix="telerik" TagName="Footer" Src="~/Common/Footer.ascx" %>
    <%@ Register TagPrefix="telerik" TagName="HeadTag" Src="~/Common/HeadTag.ascx" %>
    <%@ Register TagPrefix="telerik" TagName="Header" Src="~/Common/Header.ascx" %>
    <%@ Register TagPrefix="telerik" Namespace="Telerik.Web.UI" Assembly="Telerik.Web.UI" %>
    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/tr/xhtml11/DTD/xhtml11.dtd">
    <html xmlns="http://www.w3.org/1999/xhtml">
    <head runat="server">
        <telerik:HeadTag runat="server" ID="Headtag1"></telerik:HeadTag>
        <!-- custom head section -->
        <link href="Styles/Styles.css" type="text/css" rel="stylesheet" />
        <!-- end of custom head section -->
    </head>
    <body class="BODY">
        <form runat="server" id="mainForm" method="post">
        <telerik:Header runat="server" ID="Header1" NavigationLanguage="CS"></telerik:Header>
        <!-- content start -->
        <telerik:RadScriptManager ID="RadScriptManager1" runat="server">
        </telerik:RadScriptManager>
        <div class="panelContainer">
            <telerik:RadAjaxPanel ID="RadAjaxPanel1" runat="server" LoadingPanelID="LoadingPanel1">
                <div class="tabsContainer">
                    <!-- tabs start -->
                    <asp:LinkButton ID="lbLogin" runat="server" CssClass="tabButton"><img src="Images/btnLogin.gif" style="width: 71px; height: 72px;" alt="Login" /></asp:LinkButton>
                    <asp:LinkButton ID="lbTasks" runat="server" CssClass="tabButton"><img src="Images/btnTasks.gif" style="width: 71px; height: 72px;" alt="Tasks" /></asp:LinkButton>
                    <asp:LinkButton ID="lbSearch" runat="server" CssClass="tabButton"><img src="Images/btnSearch.gif" style="width: 71px; height: 72px;" alt="Search" /></asp:LinkButton>
                    <!-- tabs end -->
                </div>
                <div class="contentContainer">
                    <div class="panelContent">
    <asp:Panel ID="Panel1" runat="server" Style="font: normal 12px Arial, Verdana, Sans-serif;
    color: #a6a896;">
                        </asp:Panel>
                    </div>
                </div>
                <div class="controlsContainer">
                </div>
            </telerik:RadAjaxPanel>
        </div>
        <telerik:RadAjaxLoadingPanel ID="LoadingPanel1" runat="server" />
        <!-- content end -->
        <telerik:Footer runat="server" ID="Footer1" AdditionalCodeViewerFiles="~/Ajax/Examples/Common/LoadingUserControls/Styles/Styles.css"></telerik:Footer>
        </form>
    </body>
    </html>

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