private void convertToPdfButton_Click(object sender, EventArgs e) { // Create a HTML to PDF converter object with default settings HtmlToPdfConverter htmlToPdfConverter = 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="; // Add custom HTTP headers if (header1NameTextBox.Text.Length > 0 && header1ValueTextBox.Text.Length > 0) htmlToPdfConverter.HttpRequestHeaders.Add(header1NameTextBox.Text, header1ValueTextBox.Text); if (header2NameTextBox.Text.Length > 0 && header2ValueTextBox.Text.Length > 0) htmlToPdfConverter.HttpRequestHeaders.Add(header2NameTextBox.Text, header2ValueTextBox.Text); if (header3NameTextBox.Text.Length > 0 && header3ValueTextBox.Text.Length > 0) htmlToPdfConverter.HttpRequestHeaders.Add(header3NameTextBox.Text, header3ValueTextBox.Text); if (header4NameTextBox.Text.Length > 0 && header4ValueTextBox.Text.Length > 0) htmlToPdfConverter.HttpRequestHeaders.Add(header4NameTextBox.Text, header4ValueTextBox.Text); if (header5NameTextBox.Text.Length > 0 && header5ValueTextBox.Text.Length > 0) htmlToPdfConverter.HttpRequestHeaders.Add(header5NameTextBox.Text, header5ValueTextBox.Text); Cursor = Cursors.WaitCursor; // Convert HTML to PDF using the settings above string outPdfFile = @"DemoAppFiles\Output\HTML_to_PDF\HTTP_Headers.pdf"; try { // Convert the HTML page to a PDF document in a memory buffer byte[] outPdfBuffer = htmlToPdfConverter.ConvertUrl(urlTextBox.Text); // Write the memory buffer in a PDF file System.IO.File.WriteAllBytes(outPdfFile, outPdfBuffer); } catch (Exception ex) { // The HTML to PDF conversion failed MessageBox.Show(String.Format("HTML to PDF Error. {0}", ex.Message)); return; } finally { Cursor = Cursors.Arrow; } // Open the created PDF document in default PDF viewer try { System.Diagnostics.Process.Start(outPdfFile); } catch (Exception ex) { MessageBox.Show(String.Format("Cannot open created PDF file '{0}'. {1}", outPdfFile, ex.Message)); } }