Private Sub convertToPdfButton_Click(ByVal sender As Object, ByVal e As EventArgs) Handles convertToPdfButton.Click ' Create a HTML to PDF converter object with default settings Dim htmlToPdfConverter As New HtmlToPdfConverter() ' Set license key received after purchase to use the converter in licensed mode ' Leave it not set to use the converter in demo mode htmlToPdfConverter.LicenseKey = "fvDh8eDx4fHg4P/h8eLg/+Dj/+jo6Og=" Cursor = Cursors.WaitCursor Dim outPdfFile As String = "DemoAppFiles\Output\HTML_to_PDF\Watermarks_and_Stamps.pdf" Dim pdfDocument As Document = Nothing Try ' Convert a HTML page to a PDF document object pdfDocument = htmlToPdfConverter.ConvertUrlToPdfDocumentObject(urlTextBox.Text) ' Get the stamp width and height Dim stampWidth As Single = Single.Parse(stampWidthTextBox.Text) Dim stampHeight As Single = Single.Parse(stampHeightTextBox.Text) ' Center the stamp at the top of PDF page Dim stampXLocation As Single = (pdfDocument.Pages(0).ClientRectangle.Width - stampWidth) / 2 Dim stampYLocation As Single = 0 Dim stampRectangle As New RectangleF(stampXLocation, stampYLocation, stampWidth, stampHeight) ' Create the stamp template to be repeated in each PDF page Dim stampTemplate As Template = pdfDocument.AddTemplate(stampRectangle) ' Create the HTML element to add in stamp template Dim stampHtmlElement As New HtmlToPdfElement(htmlStringTextBox.Text, baseUrlTextBox.Text) ' Set the HTML viewer width for the HTML added in stamp stampHtmlElement.HtmlViewerWidth = 600 ' Fit the HTML content in stamp template stampHtmlElement.FitWidth = True stampHtmlElement.FitHeight = True ' Add HTML to stamp template stampTemplate.AddElement(stampHtmlElement) ' Save the PDF document in a memory buffer Dim outPdfBuffer() As Byte = pdfDocument.Save() ' Write the memory buffer in a PDF file System.IO.File.WriteAllBytes(outPdfFile, outPdfBuffer) Catch ex As Exception ' The HTML to PDF conversion failed MessageBox.Show(String.Format("HTML to PDF Error. {0}", ex.Message)) Return Finally ' Close the PDF document If pdfDocument IsNot Nothing Then pdfDocument.Close() End If Cursor = Cursors.Arrow End Try ' Open the created PDF document in default PDF viewer Try Process.Start(outPdfFile) Catch ex As Exception MessageBox.Show(String.Format("Cannot open created PDF file '{0}'. {1}", outPdfFile, ex.Message)) End Try End Sub