How to elegantly handle ReturnUrl when using UrlRewrite in ASP.NET 2.0 WebForms

Question

I have a folder with multiple .aspx pages that I want to restrict access to. I have added web.config to that folder with .

The

Answer 1

I ended up checking for existence of ReturnUrl in the Url and replacing it with RawUrl in EndRequest stage in Global.asax. This works for me for now...

This blog post helped me setting it up.

protected void Application_EndRequest(object sender, EventArgs e)
{
    string redirectUrl = this.Response.RedirectLocation;
    if (!this.Request.RawUrl.Contains("ReturnUrl=") && !string.IsNullOrEmpty(redirectUrl))
    {
        this.Response.RedirectLocation = Regex.Replace(redirectUrl, "ReturnUrl=(?'url'[^&]*)", delegate(Match m)
        {
            return string.Format("ReturnUrl={0}", HttpUtility.UrlEncode(this.Request.RawUrl));
        }, RegexOptions.Singleline | RegexOptions.IgnoreCase | RegexOptions.ExplicitCapture);
    }
}