Instead of Application start event in Global.asax the below code will works, in ASP.Net

As Like Application Start event the below code will works,but this will execute for each and every user login.

Copy and paste in a Class File
-----------------------------
using System;
using System.Data;
using System.Configuration;
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 : System.Web.IHttpModule
{
HttpApplication _application = null;
public UrlRewrite()
{
//
// TODO: Add constructor logic here
//
}

public void Init(System.Web.HttpApplication context)
{
context.BeginRequest += new EventHandler(context_UrlRewrite);
}

private void context_UrlRewrite(object sender, EventArgs e)
{
//Your Code
}

public void Dispose()
{
}

}

Add the below tag in a WebConfig
--------------------------------
<httpModules>
<add name="UrlRewrite" type="UrlRewrite,App_Code"/>
</httpModules>

Note: Make sure that given the Class Name.
<add name="ClassName" type="ClassName,App_Code"/>