Introducing ASP.NET Page Modules

using System;
using System.Web.UI;
using PauloMorgado.Web.UI;

/// <summary>
/// Summary description for HttpModule
/// </summary>
public class MasterModule : IPageModule
{
    public MasterModule()
    {
    }

    #region IPageModule Members

    public void Init(PageHandlerFactoryWithModules context)
    {
        context.PageCreated += PageCreatedHandler;
    }

    #endregion

    private static void PageCreatedHandler(object sender, PauloMorgado.Web.UI.PageEventArgs e)
    {
        e.Page.PreInit += PagePreInit;
    }

    private static void PagePreInit(object sender, EventArgs e)
    {
        Page page = (sender as Page);

        if (page.MasterPageFile != null)
        {
            page.MasterPageFile = "~/Site.master";
        }
    }
}