The sample demonstrates how to work with attachment and attachment annotation in PDF document.

Download Attachment.pdf

using System;
using System.Drawing;
using System.IO;
using Spire.Pdf;
using Spire.Pdf.Annotations;
using Spire.Pdf.Attachments;
using Spire.Pdf.Graphics;

namespace Attachment
{
    class Program
    {
        static void Main(string[] args)
        {
            //Create a pdf document.
            PdfDocument doc = new PdfDocument();

            //margin
            PdfUnitConvertor unitCvtr = new PdfUnitConvertor();
            PdfMargins margin = new PdfMargins();
            margin.Top = unitCvtr.ConvertUnits(2.54f, PdfGraphicsUnit.Centimeter, PdfGraphicsUnit.Point);
            margin.Bottom = margin.Top;
            margin.Left = unitCvtr.ConvertUnits(3.17f, PdfGraphicsUnit.Centimeter, PdfGraphicsUnit.Point);
            margin.Right = margin.Left;

            //create section
            PdfSection section = doc.Sections.Add();
            section.PageSettings.Size = PdfPageSize.A4;
            section.PageSettings.Margins = margin;

            // Create one page
            PdfPageBase page = section.Pages.Add();

            float y = 10;

            //title
            PdfBrush brush1 = PdfBrushes.Black;
            PdfTrueTypeFont font1 = new PdfTrueTypeFont(new Font("Arial", 16f, FontStyle.Bold));
            PdfStringFormat format1 = new PdfStringFormat(PdfTextAlignment.Center);
            page.Canvas.DrawString("Attachment", font1, brush1, page.Canvas.ClientSize.Width / 2, y, format1);
            y = y + font1.MeasureString("Attachment", format1).Height;
            y = y + 5;

            //attachment
            PdfAttachment attachment = new PdfAttachment("Header.png");
            attachment.Data = File.ReadAllBytes(@"Header.png");
            attachment.Description = "Page header picture of demo.";
            attachment.MimeType = "image/png";
            doc.Attachments.Add(attachment);

            attachment = new PdfAttachment("Footer.png");
            attachment.Data = File.ReadAllBytes(@"Footer.png");
            attachment.Description = "Page footer picture of demo.";
            attachment.MimeType = "image/png";
            doc.Attachments.Add(attachment);

            PdfTrueTypeFont font2 = new PdfTrueTypeFont(new Font("Arial", 12f, FontStyle.Bold));
            PointF location = new PointF(0, y);
            String label = "Sales Report Chart";
            byte[] data = File.ReadAllBytes(@"SalesReportChart.png");
            SizeF size = font2.MeasureString(label);
            RectangleF bounds = new RectangleF(location, size);
            page.Canvas.DrawString(label, font2, PdfBrushes.DarkOrange, bounds);
            bounds = new RectangleF(bounds.Right + 3, bounds.Top, font2.Height / 2, font2.Height);
            PdfAttachmentAnnotation annotation1
                = new PdfAttachmentAnnotation(bounds, "SalesReportChart.png", data);
            annotation1.Color = Color.Teal;
            annotation1.Flags = PdfAnnotationFlags.ReadOnly;
            annotation1.Icon = PdfAttachmentIcon.Graph;
            annotation1.Text = "Sales Report Chart";
            (page as PdfNewPage).Annotations.Add(annotation1);
            y = y + size.Height + 2;

            location = new PointF(0, y);
            label = "Science Personification Boston";
            data = File.ReadAllBytes(@"SciencePersonificationBoston.jpg");
            size = font2.MeasureString(label);
            bounds = new RectangleF(location, size);
            page.Canvas.DrawString(label, font2, PdfBrushes.DarkOrange, bounds);
            bounds = new RectangleF(bounds.Right + 3, bounds.Top, font2.Height / 2, font2.Height);
            PdfAttachmentAnnotation annotation2
                = new PdfAttachmentAnnotation(bounds, "SciencePersonificationBoston.jpg", data);
            annotation2.Color = Color.Orange;
            annotation2.Flags = PdfAnnotationFlags.NoZoom;
            annotation2.Icon = PdfAttachmentIcon.PushPin;
            annotation2.Text = "SciencePersonificationBoston.jpg, from Wikipedia, the free encyclopedia";
            (page as PdfNewPage).Annotations.Add(annotation2);
            y = y + size.Height + 2;

            location = new PointF(0, y);
            label = "Picture of Science";
            data = File.ReadAllBytes(@"Wikipedia_Science.png");
            size = font2.MeasureString(label);
            bounds = new RectangleF(location, size);
            page.Canvas.DrawString(label, font2, PdfBrushes.DarkOrange, bounds);
            bounds = new RectangleF(bounds.Right + 3, bounds.Top, font2.Height / 2, font2.Height);
            PdfAttachmentAnnotation annotation3
                = new PdfAttachmentAnnotation(bounds, "Wikipedia_Science.png", data);
            annotation3.Color = Color.SaddleBrown;
            annotation3.Flags = PdfAnnotationFlags.Locked;
            annotation3.Icon = PdfAttachmentIcon.Tag;
            annotation3.Text = "Wikipedia_Science.png, from Wikipedia, the free encyclopedia";
            (page as PdfNewPage).Annotations.Add(annotation3);
            y = y + size.Height + 2;

            location = new PointF(0, y);
            label = "Hawaii Killer Font";
            data = File.ReadAllBytes(@"Hawaii_Killer.ttf");
            size = font2.MeasureString(label);
            bounds = new RectangleF(location, size);
            page.Canvas.DrawString(label, font2, PdfBrushes.DarkOrange, bounds);
            bounds = new RectangleF(bounds.Right + 3, bounds.Top, font2.Height / 2, font2.Height);
            PdfAttachmentAnnotation annotation4
                = new PdfAttachmentAnnotation(bounds, "Hawaii_Killer.ttf", data);
            annotation4.Color = Color.CadetBlue;
            annotation4.Flags = PdfAnnotationFlags.NoRotate;
            annotation4.Icon = PdfAttachmentIcon.Paperclip;
            annotation4.Text = "Hawaii Killer Font, from http://www.1001freefonts.com";
            (page as PdfNewPage).Annotations.Add(annotation4);
            y = y + size.Height + 2;

            //Save pdf file.
            doc.SaveToFile("Attachment.pdf");
            doc.Close();

            //Launching the Pdf file.
            System.Diagnostics.Process.Start("Attachment.pdf");
        }
    }
}

Imports System.Drawing
Imports System.IO
Imports Spire.Pdf
Imports Spire.Pdf.Annotations
Imports Spire.Pdf.Attachments
Imports Spire.Pdf.Graphics

Namespace Attachment
    Friend Class Program
        Shared Sub Main(ByVal args() As String)
            'Create a pdf document.
            Dim doc As New PdfDocument()

            'margin
            Dim unitCvtr As New PdfUnitConvertor()
            Dim margin As New PdfMargins()
            margin.Top = unitCvtr.ConvertUnits(2.54F, PdfGraphicsUnit.Centimeter, PdfGraphicsUnit.Point)
            margin.Bottom = margin.Top
            margin.Left = unitCvtr.ConvertUnits(3.17F, PdfGraphicsUnit.Centimeter, PdfGraphicsUnit.Point)
            margin.Right = margin.Left

            'create section
            Dim section As PdfSection = doc.Sections.Add()
            section.PageSettings.Size = PdfPageSize.A4
            section.PageSettings.Margins = margin

            ' Create one page
            Dim page As PdfPageBase = section.Pages.Add()

            Dim y As Single = 10

            'title
            Dim brush1 As PdfBrush = PdfBrushes.Black
            Dim font1 As New PdfTrueTypeFont(New Font("Arial", 16.0F, FontStyle.Bold))
            Dim format1 As New PdfStringFormat(PdfTextAlignment.Center)
            page.Canvas.DrawString("Attachment", font1, brush1, page.Canvas.ClientSize.Width \ 2, y, format1)
            y = y + font1.MeasureString("Attachment", format1).Height
            y = y + 5

            'attachment
            Dim attachment As New PdfAttachment("Header.png")
            attachment.Data = File.ReadAllBytes("Header.png")
            attachment.Description = "Page header picture of demo."
            attachment.MimeType = "image/png"
            doc.Attachments.Add(attachment)

            attachment = New PdfAttachment("Footer.png")
            attachment.Data = File.ReadAllBytes("Footer.png")
            attachment.Description = "Page footer picture of demo."
            attachment.MimeType = "image/png"
            doc.Attachments.Add(attachment)

            Dim font2 As New PdfTrueTypeFont(New Font("Arial", 12.0F, FontStyle.Bold))
            Dim location As New PointF(0, y)
            Dim label As String = "Sales Report Chart"
            Dim data() As Byte = File.ReadAllBytes("SalesReportChart.png")
            Dim size As SizeF = font2.MeasureString(label)
            Dim bounds As New RectangleF(location, size)
            page.Canvas.DrawString(label, font2, PdfBrushes.DarkOrange, bounds)
            bounds = New RectangleF(bounds.Right + 3, bounds.Top, font2.Height \ 2, font2.Height)
            Dim annotation1 As New PdfAttachmentAnnotation(bounds, "SalesReportChart.png", data)
            annotation1.Color = Color.Teal
            annotation1.Flags = PdfAnnotationFlags.ReadOnly
            annotation1.Icon = PdfAttachmentIcon.Graph
            annotation1.Text = "Sales Report Chart"
            TryCast(page, PdfNewPage).Annotations.Add(annotation1)
            y = y + size.Height + 2

            location = New PointF(0, y)
            label = "Science Personification Boston"
            data = File.ReadAllBytes("SciencePersonificationBoston.jpg")
            size = font2.MeasureString(label)
            bounds = New RectangleF(location, size)
            page.Canvas.DrawString(label, font2, PdfBrushes.DarkOrange, bounds)
            bounds = New RectangleF(bounds.Right + 3, bounds.Top, font2.Height \ 2, font2.Height)
            Dim annotation2 As New PdfAttachmentAnnotation(bounds, "SciencePersonificationBoston.jpg", data)
            annotation2.Color = Color.Orange
            annotation2.Flags = PdfAnnotationFlags.NoZoom
            annotation2.Icon = PdfAttachmentIcon.PushPin
            annotation2.Text = "SciencePersonificationBoston.jpg, from Wikipedia, the free encyclopedia"
            TryCast(page, PdfNewPage).Annotations.Add(annotation2)
            y = y + size.Height + 2

            location = New PointF(0, y)
            label = "Picture of Science"
            data = File.ReadAllBytes("Wikipedia_Science.png")
            size = font2.MeasureString(label)
            bounds = New RectangleF(location, size)
            page.Canvas.DrawString(label, font2, PdfBrushes.DarkOrange, bounds)
            bounds = New RectangleF(bounds.Right + 3, bounds.Top, font2.Height \ 2, font2.Height)
            Dim annotation3 As New PdfAttachmentAnnotation(bounds, "Wikipedia_Science.png", data)
            annotation3.Color = Color.SaddleBrown
            annotation3.Flags = PdfAnnotationFlags.Locked
            annotation3.Icon = PdfAttachmentIcon.Tag
            annotation3.Text = "Wikipedia_Science.png, from Wikipedia, the free encyclopedia"
            TryCast(page, PdfNewPage).Annotations.Add(annotation3)
            y = y + size.Height + 2

            location = New PointF(0, y)
            label = "Hawaii Killer Font"
            data = File.ReadAllBytes("Hawaii_Killer.ttf")
            size = font2.MeasureString(label)
            bounds = New RectangleF(location, size)
            page.Canvas.DrawString(label, font2, PdfBrushes.DarkOrange, bounds)
            bounds = New RectangleF(bounds.Right + 3, bounds.Top, font2.Height \ 2, font2.Height)
            Dim annotation4 As New PdfAttachmentAnnotation(bounds, "Hawaii_Killer.ttf", data)
            annotation4.Color = Color.CadetBlue
            annotation4.Flags = PdfAnnotationFlags.NoRotate
            annotation4.Icon = PdfAttachmentIcon.Paperclip
            annotation4.Text = "Hawaii Killer Font, from http://www.1001freefonts.com"
            TryCast(page, PdfNewPage).Annotations.Add(annotation4)
            y = y + size.Height + 2

            'Save pdf file.
            doc.SaveToFile("Attachment.pdf")
            doc.Close()

            'Launching the Pdf file.
            Process.Start("Attachment.pdf")
        End Sub
    End Class
End Namespace