Error page : Error page « Development « ASP.NET Tutorial

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

<!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>
          <h1>An error has occurred</h1>
      
        <i>Detailed Error Message:</i><br>
        <asp:Label ID="labMessage" Runat="server" Font-Bold="True" ForeColor="red"></asp:Label>
      
    </div>
    </form>
</body>
</html>

File: Default.aspx.cs

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 Error : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
       string message = Request["msg"];
       labMessage.Text = message;
    }
}
9.16.Error page
	9.16.1.	Error page