DOTNET Code to Hosting multiple websites on one domain

Have you ever wondered how you could host multiple websites on one domain hosting service.
Well it is simple with this asp.net script i achieve just that. This is very usefull for people like us who dont want to invest a lot of money for domain hosting.

CODE:
///// add this in the asp.net page. load even as shown below
private void Page_Load(object sender, System.EventArgs e)
{
if(!IsPostBack)
{
string url = Request.Url.ToString().ToLower();
string domain;
// get the domain name
if ( url.StartsWith( "http://" ) )
url = url.Substring( 7 );
int x = url.IndexOf( '/' );
if ( x > 0 )
domain = url.Substring( 0, x );
else domain = url;

// redirect based on domain
switch( domain )
{
case "www.domain1.com":
case "domain2.com":
Response.Redirect( "home.aspx", true );
return;

case "www.domain2.com":
case "domain2.com":
Response.Redirect( "index.html", true );
return;

}

Server.Transfer("index.aspx");
}
}