ASP.NET - Create Sub domain for each login

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.Administration;
using Microsoft.Web.Administration;
using System.IO;


public partial class _Default : System.Web.UI.Page
{

    private const string SERVER_IP = "192.168.111.112";// put your ip address
  private const int PORT = 80;
  private const string WEB_DOMAIN_PATH = @"F:\\web\domains\{0}\";

    //Live server
    //private const string SERVER_IP = "192.168.111.111";

    protected void Page_Load(object sender, EventArgs e)
    {
   if (!string.IsNullOrEmpty(Request.QueryString["user"]))
   {

    try
    {
     string username = Request.QueryString["user"];
     string status = CreateUserSite(username, "codeproject.com");//change your Domain id

     Response.Write(status);
    }
    catch(Exception ex)
    {
     Response.Write(ex.Message); 
    }
   }
   else
   {
    Response.Write("user parameter not supplied"); 
   }

   
    }


    private string CreateUserSite(string user, string domain)
    {


   string path = string.Format(WEB_DOMAIN_PATH, domain);

        string userpath = path + user;

        string userUrl = user + "." + domain;

        using (ServerManager serverManager = new ServerManager())
        {

            bool siteExists = false;
            int number = serverManager.Sites.Where(p => p.Name.ToLower().Equals(userUrl.ToLower())).Count();

            if (number == 0)
            {
                siteExists = false;
            }
            else
            {
                siteExists = true;
            }

            if (!siteExists)
            {

                //create user directory
                Directory.CreateDirectory(userpath);

                //copy every files from a-base to a new created folder
                FileInfo[] d = new DirectoryInfo(path + @"\a-base").GetFiles();
                foreach (FileInfo fi in d)
                {
                    File.Copy(fi.FullName, userpath + @"\" + fi.Name, true);
                }

                //create a directory
                Directory.CreateDirectory(userpath + @"\swfobject");

                FileInfo[] d1 = new DirectoryInfo(path + @"\a-base\swfobject").GetFiles();
                foreach (FileInfo fi in d1)
                {
                    File.Copy(fi.FullName, userpath + @"\swfobject\" + fi.Name, true);
                }



                //create site
                Site mySite = serverManager.Sites.Add(userUrl, path + user, PORT);
                mySite.ServerAutoStart = true;
                mySite.Applications[0].ApplicationPoolName = domain;

                //create bindings
                mySite.Bindings.Clear();
                mySite.Bindings.Add(string.Format("{0}:{2}:{1}", SERVER_IP, userUrl, PORT ), "http");
                mySite.Bindings.Add(string.Format("{0}:{2}:www.{1}", SERVER_IP, userUrl, PORT), "http");


                Configuration config = serverManager.GetApplicationHostConfiguration();
                ConfigurationSection httpLoggingSection = config.GetSection("system.webServer/httpLogging", userUrl);
                httpLoggingSection["dontLog"] = true;

                serverManager.CommitChanges();

              //  ScriptManager.RegisterClientScriptBlock(this, this.GetType(), "success", "alert('" + userUrl + " created');", true);

            }
            else
            {
                //ScriptManager.RegisterClientScriptBlock(this, this.GetType(), "error", "alert('user exists. Please use other name');", true);
       throw new Exception("user exists. Please use other name");
      }


      return userUrl + " has been successfully created"; 
        }
    }
}