URL Rewrite in ASP.NET 3.5 and IIS 7 using HTTP Module

Question

Hi StackOverflow,

I am developing an application in ASP.NET 3.5 and IIS 7. I have written an HTTP Module to perform URL Rewrite, for instance, I want to rewrite a username to an Account ID "~/Profiles/profile.aspx?AccountID=" + account.AccountID.ToString();

See below:

using System; using System.Collections.Generic; using System.Data; using System.Configuration; using System.IO; using System.Linq; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.HtmlControls; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Xml.Linq;

public class UrlRewrite : IHttpModule
{
    private AccountRepository _accountRepository;
    private WebContext _webContext;

    public UrlRewrite()
    {
        _accountRepository = new AccountRepository();
        _webContext = new WebContext();
    }

    public void Init(HttpApplication application)
    {
        // Register event handler.
        application.PostResolveRequestCache +=
            (new EventHandler(this.Application_OnAfterProcess));
    }

    public void Dispose()
    {
    }

    private void Application_OnAfterProcess(object source, EventArgs e)
    {
        HttpApplication application = (HttpApplication)source;
        HttpContext context = application.Context;

        string[] extensionsToExclude = { ".axd", ".jpg", ".gif", ".png", ".xml", ".config", ".css", ".js", ".htm", ".html" };
        foreach (string s in extensionsToExclude)
        {
            if (application.Request.PhysicalPath.ToLower().Contains(s))
                return;
        }

        if (!System.IO.File.Exists(application.Request.PhysicalPath))
        {
            if (application.Request.PhysicalPath.ToLower().Contains("blogs"))
            {

            }
            else if (application.Request.PhysicalPath.ToLower().Contains("forums"))
            {

            }
            else
            {

                string username = application.Request.Path.Replace("/", "");

                Account account = _accountRepository.GetAccountByUsername(username);

                if (account != null)
                {
                    string UserURL = "~/Profiles/profile.aspx?AccountID=" + account.AccountID.ToString();
                    context.Response.Redirect(UserURL);
                }
                else
                {
                    context.Response.Redirect("~/PageNotFound.aspx");
                }
            }
        }
    }
}

I understand that I need to reference this Handler in web.config to get it to work but I don't know what I need to enter in the web.config file and where. Can some please help me here. Also, is there any other configuration needed to get this to work? Do I need to configure IIS?

Thanks in advance.

Regards

Walter

Answer 1

Try the Managed Fusion URL Rewriter, it will save you a Tom of manual programming for rewrites.

http://urlrewriter.codeplex.com

At the very least it shows you how to setup a handler in the config.

Nice thing about MF is that it supports custom modules got doing exactly what you are doing above.