Export to pdf

I have a gridview user control and I am trying to Export the gridview data to a pdf. It seems that the fact that the grid is in a user control that the code that I am trying to use is not working? I dont know if this is the reason, I can only speculate from all the things Ive seen out there and nothing is working? Anybody have a clue what it could be?
Ive tried 10 different code snippets and none has worked.

This was the latest code I tried:

        'PDF
        Response.Clear()
        Response.Buffer = True
        Response.ContentType = "application/pdf"
        Response.AddHeader("content-disposition", "attachment;filename=gridTest.pdf")
        Response.Cache.SetCacheability(HttpCacheability.NoCache)
        Dim sw As New StringWriter()
        Dim hw As New HtmlTextWriter(sw)
        myGridview.AllowPaging = False
        Dim frm As New HtmlForm()
        myGridview.Parent.Controls.Add(frm)
        frm.Attributes("runat") = "server"
        frm.Controls.Add(myGridview)
        frm.RenderControl(hw)
        myGridview.DataBind()
        Dim sr As New StringReader(sw.ToString())
        Dim pdfDoc As New iTextSharp.text.Document(PageSize.A4, 10.0F, 10.0F, 10.0F, 0.0F)
        Dim htmlparser As New HTMLWorker(pdfDoc)
        PdfWriter.GetInstance(pdfDoc, Response.OutputStream)
        pdfDoc.Open()
        htmlparser.Parse(sr)
        pdfDoc.Close()
        Response.Write(pdfDoc)
        Response.End()

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