The following code will not work because the controls (page1, page2, page3) require that their "Page_Load" event gets called.

using System;
using System.IO;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using iTextSharp.text;
using iTextSharp.text.html.simpleparser;
using iTextSharp.text.pdf;

public partial class utilities_getPDF : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        // add user controls to the page
        AddContentControl("controls/page1");
        AddContentControl("controls/page2");
        AddContentControl("controls/page3");

        // set up the response to download the rendered PDF...
        Response.ContentType = "application/pdf";
        Response.ContentEncoding = System.Text.Encoding.UTF8;
        Response.AddHeader("Content-Disposition", "attachment;filename=FileName.pdf");
        Response.Cache.SetCacheability(HttpCacheability.NoCache);

        // get the rendered HTML of the page
        System.IO.StringWriter stringWrite = new StringWriter();
        System.Web.UI.HtmlTextWriter htmlWrite = new HtmlTextWriter(stringWrite);
        this.Render(htmlWrite);
        StringReader reader = new StringReader(stringWrite.ToString());

        // write the PDF to the OutputStream...
        Document doc = new Document(PageSize.A4);
        HTMLWorker parser = new HTMLWorker(doc);
        PdfWriter.GetInstance(doc, Response.OutputStream);
        doc.Open();
        parser.Parse(reader);
        doc.Close();

    }
    //  the parts are probably irrelevant to the question...
    private const string contentPage = "~/includes/{0}.ascx";
    private void AddContentControl(string page)
    {
        content.Controls.Add(myLoadControl(page));
    }
    private Control myLoadControl(string page)
    {
        return TemplateControl.LoadControl(string.Format(contentPage, page));
    }
}

So my question is:

How can I get the controls HTML?