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Version Q2 2011 released 07/12/2011
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Window / Show Content During Load

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                    ShowContentDuringLoad="false"                                                                  ShowContentDuringLoad="true"

  • Using ShowContentDuringLoad in RadWindow


    The RadWindow's ShowContentDuringLoad property controls whether RadWindow will show the page while it is loaded or will wait until the page is completely loaded (e.g. window.onload is fired in the content page). If ShowContentDuringLoad is set to false, RadWindow will display a loading image that can be controlled with CSS.

    Note:     If you intend to show a PDF file in RadWindow instead of a standard page, make sure that ShowContentDuringLoad is set to true. Otherwise if the loaded content is not a page, window.onload will not be fired and RadWindow will not show the content.

Source Code

C# VB.NET
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  • <%@ Page Language="vb" AutoEventWireup="true" CodeFile="DefaultVB.aspx.vb" Inherits="Telerik.Web.Examples.Window.ShowContentDuringLoad.DefaultVB" %>

    <%@ Register TagPrefix="telerik" Namespace="Telerik.Web.UI" Assembly="Telerik.Web.UI" %>
    <%@ Register TagPrefix="qsf" TagName="Footer" Src="~/Common/Footer.ascx" %>
    <%@ Register TagPrefix="qsf" TagName="HeadTag" Src="~/Common/HeadTag.ascx" %>
    <%@ Register TagPrefix="qsf" TagName="Header" Src="~/Common/Header.ascx" %>
    <%@ Register TagPrefix="qsf" Namespace="Telerik.QuickStart" %>
    <!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">
        <qsf:HeadTag runat="server" ID="Headtag1"></qsf:HeadTag>
        <!-- custom head section -->
        <!-- end of custom head section -->
        <style type="text/css">
            /*
            MAKE INACTIVE WINDOW LOOK LIKE ACTIVE FOR DEMONSTRATION PURPOSES AND CLARITY OF EXAMPLE
        */
        div.RadWindow.rwInactiveWindow td.rwCorner, div.RadWindow.rwInactiveWindow td.rwTitlebar, div.RadWindow.rwInactiveWindow td.rwFooterCenter
        {
            opacity:1 !important;
         filter:none !important;
        }
        </style>
    </head>
    <body class="BODY">
        <form runat="server" id="mainForm" method="post">
        <qsf:Header ID="Header1" runat="server" NavigationLanguage="VB" />
        <telerik:RadScriptManager ID="RadScriptManager1" runat="server">
        </telerik:RadScriptManager>
        Choose site:
        <telerik:RadComboBox ID="RadComboBox1" runat="server" OnClientSelectedIndexChanged="OnClientSelectedIndexChanged">
            <Items>
                <telerik:RadComboBoxItem Text="Telerik" Value="http://www.telerik.com" />
                <telerik:RadComboBoxItem Text="Yahoo" Value="http://www.yahoo.com" />
                <telerik:RadComboBoxItem Text="CodePlex" Value="http://www.codeplex.com/" />
                <telerik:RadComboBoxItem Text="MSDN" Value="http://msdn.microsoft.com/en-us/default.aspx" />
            </Items>
        </telerik:RadComboBox>
        <div style="height: 390px; width: 840px">
            <br />
            <br />
            &nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;<strong>
                ShowContentDuringLoad="false"</strong>
            <telerik:RadWindow ID="RadWindow2" runat="server" Height="300px" Width="300px" Left="500"
                EnableShadow="true" Top="300" NavigateUrl="http://www.telerik.com" VisibleOnPageLoad="true"
                ShowContentDuringLoad="false" />
            &nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;
            &nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;
            &nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;
            &nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;<strong>ShowContentDuringLoad="true"</strong>
            <telerik:RadWindow ID="RadWindow1" runat="server" Height="300px" Width="300px" Left="900"
                Top="300" NavigateUrl="http://www.telerik.com" VisibleOnPageLoad="true" ShowContentDuringLoad="true"
                EnableShadow="true" />
            <script type="text/javascript">
                function OnClientSelectedIndexChanged(sender, eventArgs)
                {
                    var item = eventArgs.get_item();
                    var wnd = $find("<%= RadWindow1.ClientID %>");
                    var wnd2 = $find("<%= RadWindow2.ClientID %>");
                    wnd.setUrl(item.get_value());
                    wnd2.setUrl(item.get_value());
                }
            </script>
        </div>
        <qsf:Footer runat="server" ID="Footer1" />
        </form>
    </body>
    </html>

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