Pretty URLs, Separation of Layers and O/R Mapping in Web Forms ASP.NET 2.0

using System;
using System.Web.UI.WebControls;
using NHibernate.MapClasses;
using System.Collections;


public partial class EditClass : System.Web.UI.Page, MVC.Views.IGeneralView
{

    private MVC.Controllers.IAdminController _controller;
  
    public delegate Product SingleBook_Handler();

    public void Alert(string message)
    {
        notice.Text = message;
    }

    protected void Page_Load(object sender, EventArgs e)
    {
        if (IsPostBack) // on POST
        {
            _controller = MVC.Factories.Factory.PointerToFactory.GetAdminController(this); 
            //only on GET we use selectmethod,on POST--ViewState is used
            // Update method is handled by us independently from ODS !
        }
        else //on GET
        {
            _controller = MVC.Factories.Factory.PointerToFactory.GetAdminController(this); 
            ObjectDataSource1.TypeName = _controller.GetType().FullName;
            SingleBook_Handler GiveMethodName = new SingleBook_Handler(_controller.SingleBook);
            ObjectDataSource1.SelectMethod = GiveMethodName.Method.Name;
            DetailsViewValidated.DataSourceID = "ObjectDataSource1";

        }
    }
    

    protected void Page_PreRender(object sender, EventArgs e)
    {
        //here i set navurl fro two urls
        SetView();
    }

    //this handler is invoked after all other user events
    protected void ObjectDataSource1_ObjectCreating(object sender, ObjectDataSourceEventArgs e)
    {
        if (!IsPostBack) e.ObjectInstance = _controller; //we use the view state on PostBack
    }


    private void SetView()
    {
        //here I set navurl for   CreateGoToAdmin link

        ContentPlaceHolder MasterPlaceH = (ContentPlaceHolder)this.Master.FindControl("MainCol");
        HyperLink EditGoToAdmin = (HyperLink)MasterPlaceH.FindControl("EditGoToAdmin");
        EditGoToAdmin.NavigateUrl = Utils.Utils.GetUrl("action=>admin");
    }




    protected void DetailsViewValidated_ItemUpdating(object sender, DetailsViewUpdateEventArgs e)
    {
       
        _controller.UpdateSingleBook(e.Keys,e.OldValues,e.NewValues);
        e.Cancel = true;
    }
}