Не отмечайте это как ответ, это всего лишь код gmcalab, преобразованный в VB для вашего удобства. Его пример довольно легко отвечает на ваш вопрос.
Dim document As New Document(PageSize.A4, 0, 0, 50, 50)
Dim msReport As New System.IO.MemoryStream()
Try
' creation of the different writers
Dim writer As PdfWriter = PdfWriter.GetInstance(document, msReport)
' we add some meta information to the document
document.AddTitle("My Title")
document.AddAuthor("Me")
document.Open()
For i As Integer = 1 To 5
document.NewPage()
Dim datatable As New iTextSharp.text.Table(3)
datatable.Padding = 2
datatable.Spacing = 0
Dim headerwidths As Single() = {6, 20, 32}
datatable.Widths = headerwidths
datatable.DefaultHorizontalAlignment = Element.ALIGN_LEFT
datatable.AddCell(i.ToString())
datatable.AddCell("This is my name.")
datatable.AddCell("0123456789")
datatable.AddCell("No")
datatable.AddCell("Yes")
datatable.AddCell("No")
document.Add(datatable)
Next
Catch e As Exception
Console.[Error].WriteLine(e.Message)
End Try
' we close the document
document.Close()
Response.Clear()
Response.AddHeader("content-disposition", "attachment;filename=Export.pdf")
Response.ContentType = "application/pdf"
Response.BinaryWrite(msReport.ToArray())
Response.[End]()