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

    using System.Drawing;

    // Use EVO PDF Namespace
    using EvoPdfClient;

    namespace EvoHtmlToPdfDemo.PDF_Creator
    {
        public partial class File_Attachments : System.Web.UI.Page
        {
            protected void createPdfButton_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=";

                // Display the attachments panel when the PDF document is opened in a PDF viewer
                pdfDocument.ViewerPreferences.PageMode = ViewerPageMode.UseAttachments;

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

                // The titles font used to mark various sections of the PDF document
                PdfFont titleFont = new PdfFont("Times New Roman", 10, true);
                titleFont.Bold = true;
                PdfFont subtitleFont = new PdfFont("Times New Roman", 8, true);

                // Add document title
                TextElement titleTextElement = new TextElement(5, 5, "Attach Files and Streams to a PDF Document", titleFont);
                pdfPage.AddElement(titleTextElement);

                // Create an attachment from a file without icon
                string fileAttachmentPath = Server.MapPath("~/DemoAppFiles/Input/Attach_Files/Attachment_File.txt");
                pdfDocument.AddFileAttachment(fileAttachmentPath, "Attachment from File");

                // Create an attachment from a stream without icon
                string fileStreamAttachmentPath = Server.MapPath("~/DemoAppFiles/Input/Attach_Files/Attachment_Stream.txt");
                byte[] attachmentData = System.IO.File.ReadAllBytes(fileStreamAttachmentPath);
                pdfDocument.AddFileAttachment(attachmentData, "Attachment_Stream.txt", "Attachment from Stream");

                // Add the text element
                string text = "Click the next icon to open the attachment from a file:";
                TextElement textElement = new TextElement(0, 0, 200, text, subtitleFont);
                pdfDocument.AddElement(textElement, 15);

                // Create an attachment from file with paperclip icon in PDF
                string fileAttachmentWithIconPath = Server.MapPath("~/DemoAppFiles/Input/Attach_Files/Attachment_File_Icon.txt");
                // Create the attachment from file
                RectangleFloat attachFromFileIconRectangle = new RectangleFloat(0, 0, 6, 10);
                FileAttachmentElement attachFromFileElement = new FileAttachmentElement(attachFromFileIconRectangle, fileAttachmentWithIconPath);
                attachFromFileElement.IconType = FileAttachmentIcon.Paperclip;
                attachFromFileElement.Text = "Attachment from File with Paperclip Icon";
                attachFromFileElement.IconColor = RgbColor.Blue;
                pdfDocument.AddElement(attachFromFileElement, 10, true, false, 0, true, false);

                // Add the text element
                text = "Click the next icon to open the attachment from a stream:";
                textElement = new TextElement(0, 0, 200, text, subtitleFont);
                pdfDocument.AddElement(textElement, 5, false, 10, true);

                // Create an attachment from stream with pushpin icon in PDF
                string fileStreamAttachmentWithIconPath = Server.MapPath("~/DemoAppFiles/Input/Attach_Files/Attachment_Stream_Icon.txt");
                byte[] attachmentDataWithIcon = System.IO.File.ReadAllBytes(fileStreamAttachmentWithIconPath);
                // Create the attachment from stream
                RectangleFloat attachFromStreamIconRectangle = new RectangleFloat(0, 0, 6, 10);
                FileAttachmentElement attachFromStreamElement = new FileAttachmentElement(attachFromStreamIconRectangle, attachmentDataWithIcon, "Attachment_Stream_Icon.txt");
                attachFromStreamElement.IconType = FileAttachmentIcon.PushPin;
                attachFromStreamElement.Text = "Attachment from Stream with Pushpin Icon";
                attachFromStreamElement.IconColor = RgbColor.Green;
                pdfDocument.AddElement(attachFromStreamElement, 10, true, false, 0, true, false);

                // 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=File_Attachments.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();
            }

            protected void Page_Load(object sender, EventArgs e)
            {
                if (!IsPostBack)
                {
                    sampleCodeLiteral.Text = System.IO.File.ReadAllText(Server.MapPath("~/DemoAppFiles/Input/Code_Samples/CSharp/AspNet/PDF_Creator/File_Attachments.html"));
                    descriptionLiteral.Text = System.IO.File.ReadAllText(Server.MapPath("~/DemoAppFiles/Input/Descriptions/AspNet/PDF_Creator/File_Attachments.html"));

                    Master.CollapseAll();
                    Master.ExpandNode("PDF_Creator");
                    Master.SelectNode("File_Attachments");
                }
            }

            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;
                }
            }
        }
    }