How To display a JavaScript alert window during a partial postback, from code behind




<%@ Page Language="C#" AutoEventWireup="true" CodeFile="AjaxError.aspx.cs"
Inherits="AjaxError" %>


<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"
>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>Untitled Page</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:ScriptManager ID="ScriptManger1" runat="server">
</asp:ScriptManager>
<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<ContentTemplate>
<asp:Button ID="btnRedirect" runat="server" Text="Redirect"
OnClick="btnRedirect_Click" />
</ContentTemplate>
</asp:UpdatePanel>
</div>
</form>
</body>
</html>




using System;
using System.Data;
using System.Configuration;
using System.Collections;
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;

public partial class AjaxError : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{

}
protected void btnRedirect_Click(object sender, EventArgs e)
{
ScriptManager.RegisterStartupScript(Page, GetType(), "MyScript",
"alert(" + DateTime.Now.Millisecond + ");", true);
//Code For Async Redirect
// ScriptManager.RegisterStartupScript(Page, GetType(), "MyScript1",
"javascript:window.location.href='Default.aspx'",true);


}
}

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