URL REWRITING/VIRTUAL URL

Let us assume that ,we need to display the user public profile information in viewprofile.aspx page

Generally we pass the user id in the qurey string like ”viewprofile.aspx?id=100” . We fetch data using id value and displays the information .

If client request s you to url format to be like http://yoursite.com/ publicprofile /username

For that type of cases we use the url rewriting concepts .

Introduction

In this article we will learn url rewriting ,virtual url   concepts

URL rewriting is the process of accepting an incoming Web request and automatically redirecting it to a different URL.

Using the code

Create  “publicprofile” directory  in your web application.

Global.asax

void Application_BeginRequest(object sender, EventArgs e)

{

string CurrentPath = Request.Url.ToString();

            if (CurrentPath.Contains("/publicprofile/"))

            {

                HttpContext MyContext = HttpContext.Current;

                string url = CurrentPath.Substring(0,CurrentPath.LastIndexOf("/"));

                string username = CurrentPath.Substring(CurrentPath.LastIndexOf("/"));

                username = username.Replace("/", "");

                if (CurrentPath[CurrentPath.Length - 1].ToString() == "/")

                {

                    HttpContext.Current.Response.Status = "301 Moved Permanently";

                    HttpContext.Current.Response.AddHeader("Location",

                    Request.Url.ToString().Replace(CurrentPath, url));

                }

                else

                {         

                   MyContext.RewritePath("index.aspx?uname=" + username);                  

                }

            }

}

Place “Index.aspx” in “publicprofile” directory.

Index.aspx.cs

protected void Page_Load(object sender, EventArgs e)

    {

        if (Request.QueryString["uname"] != "")

        {

  int id = Validateuser.getId(Request.QueryString["uname"].ToString());

            if (id != 0)

            {

                ProfileInfo(id);

            }

            else

            {

                Response.Redirect(“http://yoursite.com/?err=1");

            }

        }

        else

        {

           Response.Redirect(“http://yoursite.com/?err=1");

        }

    }

protected void ProfileInfo(int proID){

DataTable dt = Validateuser.getprofile(proID);

//Code to assign values to controls……

}

Web.config:

<httpModules>

<add name="UrlRoutingModule" type="System.Web.Routing.UrlRoutingModule, System.Web.Routing, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />

</httpModules>