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=" ' Set if the fonts are embedded in the generated PDF document ' Leave it not set to embed the fonts in the generated PDF document htmlToPdfConverter.PdfDocumentOptions.EmbedFonts = embedFontsCheckBox.Checked Cursor = Cursors.WaitCursor ' Convert HTML to PDF using the settings above Dim outPdfFile As String = "DemoAppFiles\Output\HTML_to_PDF\Embed_Fonts_in_PDF.pdf" Try If convertUrlRadioButton.Checked Then Dim url As String = urlTextBox.Text ' Convert the HTML page given by an URL to a PDF document in a memory buffer Dim outPdfBuffer() As Byte = htmlToPdfConverter.ConvertUrl(url) ' Write the memory buffer in a PDF file System.IO.File.WriteAllBytes(outPdfFile, outPdfBuffer) Else Dim htmlString As String = htmlStringTextBox.Text Dim baseUrl As String = baseUrlTextBox.Text ' Convert a HTML string with a base URL to a PDF document in a memory buffer Dim outPdfBuffer() As Byte = htmlToPdfConverter.ConvertHtml(htmlString, baseUrl) ' Write the memory buffer in a PDF file System.IO.File.WriteAllBytes(outPdfFile, outPdfBuffer) End If Catch ex As Exception ' The HTML to PDF conversion failed MessageBox.Show(String.Format("HTML to PDF Error. {0}", ex.Message)) Return Finally 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