Write a web application in ASP.Net that generates the ‘IndexOutOfRange’ exception when a button is clicked. Instead of displaying the exception, redirect the user to a custom error page. All of this should be done with tracing for the page being enabled.

By /

Answer:

Default.aspx:

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="WebApplication1._Default" Trace="true" %>

<!DOCTYPE html>
<html>
<head>
    <title>IndexOutOfRange Exception Demo</title>
</head>
<body>
    <form id="form1" runat="server">
        <div>
            <h2>Click the button to generate an exception</h2>
            <asp:Button ID="btnGenerateException" runat="server" Text="Generate Exception" OnClick="btnGenerateException_Click" />
        </div>
    </form>
</body>
</html>

Default.aspx.cs:

using System;

namespace WebApplication1
{
    public partial class _Default : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
        }

        protected void btnGenerateException_Click(object sender, EventArgs e)
        {
            try
            {
                // Intentionally causing an IndexOutOfRangeException
                int[] numbers = { 1, 2, 3 };
                int value = numbers[5]; // This will throw IndexOutOfRangeException
            }
            catch (Exception ex)
            {
                // Log the exception to the trace
                Trace.Warn("Exception caught", ex.Message);

                // Redirect the user to a custom error page
                Response.Redirect("~/ErrorPage.aspx");
            }
        }
    }
}

Web.config:

<?xml version="1.0" encoding="utf-8"?>
<configuration>
  <system.web>
    <customErrors mode="On" defaultRedirect="~/ErrorPage.aspx">
      <error statusCode="500" redirect="~/ErrorPage.aspx"/>
    </customErrors>
    <trace enabled="true" pageOutput="true" />
  </system.web>

  <system.webServer>
    <httpErrors errorMode="Custom">
      <error statusCode="500" path="/ErrorPage.aspx" responseMode="ExecuteURL"/>
    </httpErrors>
  </system.webServer>
</configuration>

ErrorPage.aspx:

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="ErrorPage.aspx.cs" Inherits="WebApplication1.ErrorPage" %>

<!DOCTYPE html>
<html>
<head>
    <title>Error Page</title>
</head>
<body>
    <h2>Oops! Something went wrong.</h2>
    <p>Sorry, there was an error while processing your request. Please try again later.</p>
</body>
</html>

Related Posts

Scroll to Top