    using System;
    using System.Collections.Generic;
    using System.Web;
    using System.Web.UI;
    using System.Web.UI.WebControls;

    // Use EVO PDF Namespace
    using EvoPdfClient;

    namespace EvoHtmlToPdfDemo.PDF_Creator.PDF_Viewer_Preferences
    {
        public partial class Set_Viewer_Preferences : System.Web.UI.Page
        {
            protected void convertToPdfButton_Click(object sender, EventArgs e)
            {
                // Get the server IP and port
                String serverIP = textBoxServerIP.Text;
                uint serverPort = uint.Parse(textBoxServerPort.Text);

                // Create a PDF document
                Document pdfDocument = null;
                if (radioButtonUseTcpService.Checked)
                    pdfDocument = new Document(serverIP, serverPort);
                else
                    pdfDocument = new Document(true, textBoxWebServiceUrl.Text);

                // Set optional service password
                if (textBoxServicePassword.Text.Length > 0)
                    pdfDocument.ServicePassword = textBoxServicePassword.Text;

                // Set license key received after purchase to use the converter in licensed mode
                // Leave it not set to use the converter in demo mode
                pdfDocument.LicenseKey = "4W9+bn19bn5ue2B+bn1/YH98YHd3d3c=";

                // Add a page to PDF document
                PdfPage pdfPage = pdfDocument.AddPage();

                // Set the PDF Viewer Preferences

                // Set page layout to continuous one column, single page, two column left, two column right
                pdfDocument.ViewerPreferences.PageLayout = SelectedPageLayout();
                // Set page mode to default, display attachments, display thumbnails, display attachments
                pdfDocument.ViewerPreferences.PageMode = SelectedPageMode();

                // Hide the viewer menu
                pdfDocument.ViewerPreferences.HideMenuBar = hideMenuBarCheckBox.Checked;
                // Hide the viewer toolbar
                pdfDocument.ViewerPreferences.HideToolbar = hideToolbarCheckBox.Checked;
                // Hide scroll bars and navigation controls
                pdfDocument.ViewerPreferences.HideWindowUI = hideWindowUICheckBox.Checked;

                // Display the document title in viewer title bar
                pdfDocument.ViewerPreferences.DisplayDocTitle = displayDocTitleCheckBox.Checked;

                // Create a HTML to PDF element to add to document
                HtmlToPdfElement htmlToPdfElement = new HtmlToPdfElement(urlTextBox.Text);

                // Optionally set a delay before conversion to allow asynchonous scripts to finish
                htmlToPdfElement.ConversionDelay = 2;

                // Add the HTML to PDF element to document
                pdfPage.AddElement(htmlToPdfElement);

                // Save the PDF document in a memory buffer
                byte[] outPdfBuffer = pdfDocument.Save();

                // Send the PDF as response to browser

                // Set response content type
                Response.AddHeader("Content-Type", "application/pdf");

                // Instruct the browser to open the PDF file as an attachment or inline
                Response.AddHeader("Content-Disposition", String.Format("attachment; filename=Set_PDF_Viewer_Preferences.pdf; size={0}", outPdfBuffer.Length.ToString()));

                // Write the PDF document buffer to HTTP response
                Response.BinaryWrite(outPdfBuffer);

                // End the HTTP response and stop the current page processing
                Response.End();
            }

            private ViewerPageLayout SelectedPageLayout()
            {
                switch (pageLayoutComboBox.SelectedValue)
                {
                    case "Single Page":
                        return ViewerPageLayout.SinglePage;
                    case "One Column":
                        return ViewerPageLayout.OneColumn;
                    case "Two Column Left":
                        return ViewerPageLayout.TwoColumnLeft;
                    case "Two Column Right":
                        return ViewerPageLayout.TwoColumnRight;
                    default:
                        return ViewerPageLayout.OneColumn;
                }
            }

            private ViewerPageMode SelectedPageMode()
            {
                switch (pageModeComboBox.SelectedValue)
                {
                    case "Default":
                        return ViewerPageMode.UseNone;
                    case "Display Outlines":
                        return ViewerPageMode.UseOutlines;
                    case "Display Thumbnails":
                        return ViewerPageMode.UseThumbs;
                    case "Display Full Screen":
                        return ViewerPageMode.FullScreen;
                    case "Display Optional Content Group":
                        return ViewerPageMode.UseOC;
                    case "Display Attachments":
                        return ViewerPageMode.UseAttachments;
                    default:
                        return ViewerPageMode.UseNone;
                }
            }

            protected void Page_Load(object sender, EventArgs e)
            {
                if (!IsPostBack)
                {
                    pageLayoutComboBox.SelectedValue = "One Column";
                    pageModeComboBox.SelectedValue = "Default";

                    sampleCodeLiteral.Text = System.IO.File.ReadAllText(Server.MapPath("~/DemoAppFiles/Input/Code_Samples/CSharp/AspNet/PDF_Creator/PDF_Viewer/Set_Viewer_Preferences.html"));
                    descriptionLiteral.Text = System.IO.File.ReadAllText(Server.MapPath("~/DemoAppFiles/Input/Descriptions/AspNet/PDF_Creator/PDF_Viewer/Set_Viewer_Preferences.html"));

                    Master.CollapseAll();
                    Master.ExpandNode("PDF_Creator");
                    Master.ExpandNode("PDF_Creator_PDF_Viewer_Preferences");
                    Master.SelectNode("PDF_Creator_Set_Viewer_Preferences");
                }
            }

            protected void demoMenu_MenuItemClick(object sender, MenuEventArgs e)
            {
                switch (e.Item.Value)
                {
                    case "Live_Demo":
                        demoMultiView.SetActiveView(liveDemoView);
                        break;
                    case "Description":
                        demoMultiView.SetActiveView(descriptionView);
                        break;
                    case "Sample_Code":
                        demoMultiView.SetActiveView(sampleCodeView);
                        break;
                    default:
                        break;
                }
            }
        }
    }