ModalPopupExtender 也可以实现在后台的调用：
页面代码(Modified from www.asp.net/ajax)：
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<!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">
<title>Untitled Page</title>
<link href="StyleSheet.css" rel="stylesheet" type="text/css" />
<script type="text/javascript">
var styleToSelect;
function onOk() {
document.getElementById('Paragraph1').className = styleToSelect;
}
</script>
</head>
<body>
<form id="form1" runat="server">
<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
<br />
<asp:LinkButton ID="LinkButton1" runat="server">Please click to select an alternate text style.</asp:LinkButton><br />
<br />
<div>
<p id="Paragraph1">
<a href="http://joeon.net"><span style="color: #3366cc">Joe Stagner</span></a>,
a member of the Microsoft product team, builds a CascadingDropDown sample application
that demonstrates two fundamental benefits of AJAX-enabled web applications, namely
web service integration and asynchronous page updates.
</p>
<asp:Panel ID="Panel1" runat="server" CssClass="modalPopup" Style="display: none" Width="233px">
<p>Choose the style you would like:</p>
<input id="RadioA" name="Radio" onclick="styleToSelect = 'sampleStyleA';" type="radio" />
<label class="sampleStyleA" for="RadioA">Choose THIS Style.</label><br />
<input id="RadioB" name="Radio" onclick="styleToSelect = 'sampleStyleB';" type="radio" />
<label class="sampleStyleB" for="RadioB">Choose THIS Style.</label><br />
<input id="RadioC" name="Radio" onclick="styleToSelect = 'sampleStyleC';" type="radio" />
<label class="sampleStyleC" for="RadioC">Choose THIS Style.</label><br />
<input id="RadioD" name="Radio" onclick="styleToSelect = 'sampleStyleD';" type="radio" />
<label class="sampleStyleD" for="RadioD">Choose THIS Style.</label><br />
<br />
<div align="center">
<asp:Button ID="OkButton" runat="server" Text="OK" />
<asp:Button ID="CancelButton" runat="server" Text="Cancel" />
</div>
</asp:Panel>
<asp:Button ID="Button1" runat="server" onclick="Button1_Click" Text="后台显示" />
<br />
</div>
</form>
</body>
</html>
后台代码：
using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using AjaxControlToolkit;
public partial class _Default : System.Web.UI.Page
{
private ModalPopupExtender modalPE = new ModalPopupExtender();
protected void Page_Load(object sender, EventArgs e)
{
/* default content if used in client
<ajaxToolkit:ModalPopupExtender ID="ModalPopupExtender1" runat="server"
TargetControlID="LinkButton1"
PopupControlID="Panel1"
BackgroundCssClass="modalBackground"
DropShadow="true"
OkControlID="OkButton"
OnOkScript="onOk()"
CancelControlID="CancelButton" />
* */
modalPE.TargetControlID = "LinkButton1";
modalPE.PopupControlID = "Panel1";
modalPE.BackgroundCssClass = "modalBackground";
modalPE.DropShadow = true;
modalPE.OnOkScript = "onOk()";
modalPE.CancelControlID = "CancelButton";
modalPE.OkControlID = "OkButton";
modalPE.ID = "ModalPopupExtender1";
form1.Controls.Add(modalPE);
}
protected void Button1_Click(object sender, EventArgs e)
{
modalPE.Show();
//if you want to hide then do this depends on your requirement
//modalPE.Hide();
}
}
The End.