URL Rewriting/Mapping using Global.asax

Ultimately I wound up using a different method, specified in my other blog post on URL Rewriting on GoDaddy and Shared hosting.

However, the method below is actually very useful if you are trying to do certain validation which cannot be expressed in web.config or RegEx prior to redirect, such as checking if querystring is valid and exists in database values, etc.

        //try out various request types such as absolute path and raw url to see differences
        protected void Application_BeginRequest(object sender, EventArgs e)
        {
            string originalPath = HttpContext.Current.Request.Path.ToLower();
            //HttpContext.Current.Request.RawUrl.ToLower();
                //HttpContext.Current.Request.Path.ToLower();
            RewritePaths(originalPath);
        }

        private void RewritePaths(string originalPath)
        {
            Rewrite(originalPath, "default", "index");
            Rewrite(originalPath, "home", "index");
            Rewrite(originalPath, "index");
            Rewrite(originalPath, "login");
        }

        private void Rewrite(string path, string page)
        {
            if (path.Contains("/" + page))
            {
                if (!path.Contains(".aspx"))
                {
                    //Context.RewritePath(path.Replace("/" + page, "/" + page + ".aspx"));
                    Context.RewritePath(page + ".aspx");
                }
            }
        }

        private void Rewrite(string path, string frompage, string topage)
        {
            if (path.Contains("/" + frompage))
            {
                if (!path.Contains(".aspx")) {
                //Context.RewritePath(path.Replace("/" + frompage, "/" + topage + ".aspx"));
                Context.RewritePath(topage + ".aspx");
                }
            }
        }

About Ronnie Diaz

Ronnie Diaz is a software engineer and tech consultant. Ronnie started his career in front-end and back-end development for companies in ecommerce, service industries and remote education. This work transitioned from traditional desktop client-server applications through early cloud development. Software included human resource management and service technician workflows, online retail e-commerce and electronic ordering and fulfillment, IVR customer relational systems, and video streaming remote learning SCORM web applications. Hands on server experience and software performance optimization led to creation of a startup business focused on collocated data center services and continued experience with video streaming hardware and software. This led to a career in Amazon Prime Video where Ronnie is currently employed, building software and systems which stream live sports and events for millions of viewers around the world.

Posted on April 12, 2011, in Programming & Development and tagged , , , , , , , , , . Bookmark the permalink. 1 Comment.

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