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Add or edit PDF annotations in C#

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Sample C# code to use PDFTron SDK for adding or editing PDF annotations. The annotation types included in this sample are: hyperlink, intra-document link, stamp, rubber stamp, file attachment, sound, text, free-text, line, circle, square, polygon, polyline, highlight, squiggly, caret, and ink. Learn more about our C# PDF Library and PDF Annotation Library.

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//
// Copyright (c) 2001-2021 by PDFTron Systems Inc. All Rights Reserved.
//

using pdftron;
using pdftron.Common;
using pdftron.Filters;
using pdftron.SDF;
using pdftron.PDF;
using pdftron.PDF.Annots;

namespace AnnotationTestCS
{
	/// <summary>
	/// Summary description for Class1.
	/// </summary>
	class Class1
	{
		private static pdftron.PDFNetLoader pdfNetLoader = pdftron.PDFNetLoader.Instance();
		static Class1() {}

		private static void AnnotationHighLevelAPI(PDFDoc doc)
		{
			// The following code snippet traverses all annotations in the document
			System.Console.WriteLine("Traversing all annotations in the document...");

			string uri;
			int page_num = 1;
			for (PageIterator itr = doc.GetPageIterator(); itr.HasNext(); itr.Next())
			{
				System.Console.WriteLine("Page " + page_num++ + ": ");

				Page page = itr.Current();
				int num_annots = page.GetNumAnnots();
				for (int i = 0; i < num_annots; ++i)
				{
					Annot annot = page.GetAnnot(i);
					if (!annot.IsValid()) continue;
					System.Console.WriteLine("Annot Type: " + annot.GetSDFObj().Get("Subtype").Value().GetName());

					Rect bbox = annot.GetRect();
					System.Console.WriteLine("  Position: " + bbox.x1
						+ ", " + bbox.y1
						+ ", " + bbox.x2
						+ ", " + bbox.y2);

					switch (annot.GetType())
					{
						case Annot.Type.e_Link:
							{
								Link lnk = new Link(annot);
								Action action = lnk.GetAction();
								if (!action.IsValid()) continue;
								if (action.GetType() == Action.Type.e_GoTo)
								{
									Destination dest = action.GetDest();
									if (!dest.IsValid())
									{
										System.Console.WriteLine("  Destination is not valid");
									}
									else
									{
										int pg_num = dest.GetPage().GetIndex();
										System.Console.WriteLine("  Links to: page number " + pg_num + " in this document");
									}
								}
								else if (action.GetType() == Action.Type.e_URI)
								{
									uri = action.GetSDFObj().Get("URI").Value().GetAsPDFText();
									System.Console.WriteLine("  Links to: " + uri);
								}
								// ...
							}
							break;
						case Annot.Type.e_Widget:
							break;
						case Annot.Type.e_FileAttachment:
							break;
						// ...
						default:
							break;
					}
				}
			}

			// Use the high-level API to create new annotations.
			Page first_page = doc.GetPage(1);

			// Create a hyperlink...
			Link hyperlink = Link.Create(doc, new Rect(85, 570, 503, 524), Action.CreateURI(doc, "http://www.pdftron.com"));
			first_page.AnnotPushBack(hyperlink);

			// Create an intra-document link...
			Action goto_page_3 = Action.CreateGoto(Destination.CreateFitH(doc.GetPage(3), 0));
			Link link = Link.Create(doc, new Rect(85, 458, 503, 502), goto_page_3);
			link.SetColor(new ColorPt(0, 0, 1));

			// Add the new annotation to the first page
			first_page.AnnotPushBack(link);

			// Create a stamp annotation ...
			RubberStamp stamp = RubberStamp.Create(doc, new Rect(30, 30, 300, 200));
			stamp.SetIcon("Draft");
			first_page.AnnotPushBack(stamp);

			// Create a file attachment annotation (embed the 'peppers.jpg').
			FileAttachment file_attach = FileAttachment.Create(doc, new Rect(80, 280, 108, 320), (input_path + "peppers.jpg"));
			first_page.AnnotPushBack(file_attach);


			Ink ink = Ink.Create(doc, new Rect(110, 10, 300, 200));
			Point pt3 = new Point(110, 10);
			//pt3.x = 110; pt3.y = 10;
			ink.SetPoint(0, 0, pt3);
			pt3.x = 150; pt3.y = 50;
			ink.SetPoint(0, 1, pt3);
			pt3.x = 190; pt3.y = 60;
			ink.SetPoint(0, 2, pt3);
			pt3.x = 180; pt3.y = 90;
			ink.SetPoint(1, 0, pt3);
			pt3.x = 190; pt3.y = 95;
			ink.SetPoint(1, 1, pt3);
			pt3.x = 200; pt3.y = 100;
			ink.SetPoint(1, 2, pt3);
			pt3.x = 166; pt3.y = 86;
			ink.SetPoint(2, 0, pt3);
			pt3.x = 196; pt3.y = 96;
			ink.SetPoint(2, 1, pt3);
			pt3.x = 221; pt3.y = 121;
			ink.SetPoint(2, 2, pt3);
			pt3.x = 288; pt3.y = 188;
			ink.SetPoint(2, 3, pt3);
			ink.SetColor(new ColorPt(0, 1, 1), 3);
			first_page.AnnotPushBack(ink);
		}

		static void AnnotationLowLevelAPI(PDFDoc doc)
		{
			Page page = doc.GetPage(1);

			Obj annots = page.GetAnnots();
			if (annots == null)
			{
				// If there are no annotations, create a new annotation 
				// array for the page.
				annots = doc.CreateIndirectArray();
				page.GetSDFObj().Put("Annots", annots);
			}

			// Create the Text annotation
			Obj text_annot = doc.CreateIndirectDict();
			text_annot.PutName("Subtype", "Text");
			text_annot.PutBool("Open", true);
			text_annot.PutString("Contents", "The quick brown fox ate the lazy mouse.");
			text_annot.PutRect("Rect", 266, 116, 430, 204);

			// Insert the annotation in the page annotation array
			annots.PushBack(text_annot);

			// Create a Link annotation
			Obj link1 = doc.CreateIndirectDict();
			link1.PutName("Subtype", "Link");
			Destination dest = Destination.CreateFit(doc.GetPage(2));
			link1.Put("Dest", dest.GetSDFObj());
			link1.PutRect("Rect", 85, 705, 503, 661);
			annots.PushBack(link1);

			// Create another Link annotation
			Obj link2 = doc.CreateIndirectDict();
			link2.PutName("Subtype", "Link");
			Destination dest2 = Destination.CreateFit(doc.GetPage(3));
			link2.Put("Dest", dest2.GetSDFObj());
			link2.PutRect("Rect", 85, 638, 503, 594);
			annots.PushBack(link2);

			// Note that PDFNet APi can be used to modify existing annotations. 
			// In the following example we will modify the second link annotation 
			// (link2) so that it points to the 10th page. We also use a different 
			// destination page fit type.

			link2.Put("Dest",
				Destination.CreateXYZ(doc.GetPage(10), 100, 792 - 70, 10).GetSDFObj());

			// Create a third link annotation with a hyperlink action (all other 
			// annotation types can be created in a similar way)
			Obj link3 = doc.CreateIndirectDict();
			link3.PutName("Subtype", "Link");
			link3.PutRect("Rect", 85, 570, 503, 524);

			// Create a URI action
			Obj action = link3.PutDict("A");
			action.PutName("S", "URI");
			action.PutString("URI", "http://www.pdftron.com");
			annots.PushBack(link3);
		}
		
		private static void CreateTestAnnots(PDFDoc doc) {

			ElementWriter ew = new ElementWriter();
			ElementBuilder eb = new ElementBuilder();
			Element element;

			Page first_page= doc.PageCreate(new Rect(0, 0, 600, 600));
			doc.PagePushBack(first_page);
			ew.Begin(first_page, ElementWriter.WriteMode.e_overlay, false );	// begin writing to this page
			ew.End();  // save changes to the current page

			//
			// Test of a free text annotation.
			//
			{
				FreeText txtannot = FreeText.Create( doc, new Rect(10, 400, 160, 570)  );
				txtannot.SetContents( "\n\nSome swift brown fox snatched a gray hare out of the air by freezing it with an angry glare." +
									  "\n\nAha!\n\nAnd there was much rejoicing!" );
				txtannot.SetBorderStyle( new Annot.BorderStyle( Annot.BorderStyle.Style.e_solid, 1, 10, 20 ) );
				txtannot.SetQuaddingFormat(0);
				first_page.AnnotPushBack(txtannot);
				txtannot.RefreshAppearance();
			}
			{
				FreeText txtannot = FreeText.Create( doc, new Rect(100, 100, 350, 500)  );
				txtannot.SetContentRect( new Rect( 200, 200, 350, 500 ) );
				txtannot.SetContents( "\n\nSome swift brown fox snatched a gray hare out of the air by freezing it with an angry glare." +
									  "\n\nAha!\n\nAnd there was much rejoicing!" );
				txtannot.SetCalloutLinePoints( new Point(200,300), new Point(150,290), new Point(110,110) );
				txtannot.SetBorderStyle(new Annot.BorderStyle(Annot.BorderStyle.Style.e_solid, 1, 10, 20 ) );
				txtannot.SetEndingStyle(Line.EndingStyle.e_ClosedArrow );
				txtannot.SetColor( new ColorPt( 0, 1, 0 ) );
				txtannot.SetQuaddingFormat(1);
				first_page.AnnotPushBack(txtannot);
				txtannot.RefreshAppearance();
			}
			{
				FreeText txtannot = FreeText.Create( doc, new Rect(400, 10, 550, 400)  );
				txtannot.SetContents( "\n\nSome swift brown fox snatched a gray hare out of the air by freezing it with an angry glare." +
									  "\n\nAha!\n\nAnd there was much rejoicing!" );
				txtannot.SetBorderStyle( new Annot.BorderStyle( Annot.BorderStyle.Style.e_solid, 1, 10, 20 ) );
				txtannot.SetColor( new ColorPt( 0, 0, 1 ) );
				txtannot.SetOpacity( 0.2 );
				txtannot.SetQuaddingFormat(2);
				first_page.AnnotPushBack(txtannot);
				txtannot.RefreshAppearance();
			}

			Page page= doc.PageCreate(new Rect(0, 0, 600, 600));
			doc.PagePushBack(page);
			ew.Begin(page, ElementWriter.WriteMode.e_overlay, false );	// begin writing to this page
			eb.Reset();			// Reset the GState to default
			ew.End();  // save changes to the current page

			{
				//Create a Line annotation...
				Line line = Line.Create(doc, new Rect(250, 250, 400, 400));
				line.SetStartPoint( new Point(350, 270 ) );
				line.SetEndPoint( new Point(260,370) );
				line.SetStartStyle(Line.EndingStyle.e_Square);
				line.SetEndStyle(Line.EndingStyle.e_Circle);
				line.SetColor(new ColorPt(.3, .5, 0), 3);
				line.SetContents( "Dashed Captioned" );
				line.SetShowCaption(true);
				line.SetCaptionPosition(Line.CapPos.e_Top );
				double[] dash = new double[2];
				dash[0] = 2;
				dash[1] = 2.0;
				line.SetBorderStyle( new Annot.BorderStyle( Annot.BorderStyle.Style.e_dashed, 2, 0, 0, dash ) );
				line.RefreshAppearance();
				page.AnnotPushBack(line);
			}
			{
				Line line=Line.Create(doc, new Rect(347, 377, 600, 600));
				line.SetStartPoint( new Point(385, 410 ) );
				line.SetEndPoint(new Point(540,555) );
				line.SetStartStyle(Line.EndingStyle.e_Circle);
				line.SetEndStyle(Line.EndingStyle.e_OpenArrow);
				line.SetColor(new ColorPt(1, 0, 0), 3);
				line.SetInteriorColor(new ColorPt(0, 1, 0), 3);
				line.SetContents( "Inline Caption" );
				line.SetShowCaption(true);
				line.SetCaptionPosition( Line.CapPos.e_Inline);
				line.SetLeaderLineExtensionLength( -4 );
				line.SetLeaderLineLength( -12 );
				line.SetLeaderLineOffset( 2 );
				line.RefreshAppearance();
				page.AnnotPushBack(line);
			}
			{
				Line line=Line.Create(doc, new Rect(10, 400, 200, 600));
				line.SetStartPoint(new Point(25, 426 ) );
				line.SetEndPoint(new Point(180,555) );
				line.SetStartStyle(Line.EndingStyle.e_Circle);
				line.SetEndStyle(Line.EndingStyle.e_Square);
				line.SetColor(new ColorPt(0, 0, 1), 3);
				line.SetInteriorColor(new ColorPt(1, 0, 0), 3);
				line.SetContents("Offset Caption");
				line.SetShowCaption(true);
				line.SetCaptionPosition( Line.CapPos.e_Top );
				line.SetTextHOffset( -60 );
				line.SetTextVOffset( 10 );
				line.RefreshAppearance();
				page.AnnotPushBack(line);
			}
			{
				Line line=Line.Create(doc, new Rect(200, 10, 400, 70));
				line.SetStartPoint(new Point(220, 25 ) );
				line.SetEndPoint(new Point(370,60) );
				line.SetStartStyle(Line.EndingStyle.e_Butt);
				line.SetEndStyle(Line.EndingStyle.e_OpenArrow);
				line.SetColor(new ColorPt(0, 0, 1), 3);
				line.SetContents("Regular Caption");
				line.SetShowCaption(true);
				line.SetCaptionPosition( Line.CapPos.e_Top );
				line.RefreshAppearance();
				page.AnnotPushBack(line);
			}
			{
				Line line=Line.Create(doc, new Rect(200, 70, 400, 130));
				line.SetStartPoint(new Point(220, 111 ) );
				line.SetEndPoint(new Point(370,78) );
				line.SetStartStyle(Line.EndingStyle.e_Circle);
				line.SetEndStyle(Line.EndingStyle.e_Diamond);
				line.SetContents("Circle to Diamond");
				line.SetColor(new ColorPt(0, 0, 1), 3);
				line.SetInteriorColor(new ColorPt(0, 1, 0), 3);
				line.SetShowCaption(true);
				line.SetCaptionPosition( Line.CapPos.e_Top );
				line.RefreshAppearance();
				page.AnnotPushBack(line);
			}
			{
				Line line=Line.Create(doc, new Rect(10, 100, 160, 200));
				line.SetStartPoint(new Point(15, 110 ) );
				line.SetEndPoint(new Point(150, 190) );
				line.SetStartStyle(Line.EndingStyle.e_Slash);
				line.SetEndStyle(Line.EndingStyle.e_ClosedArrow);
				line.SetContents("Slash to CArrow");
				line.SetColor(new ColorPt(1, 0, 0), 3);
				line.SetInteriorColor(new ColorPt(0, 1, 1), 3);
				line.SetShowCaption(true);
				line.SetCaptionPosition( Line.CapPos.e_Top );
				line.RefreshAppearance();
				page.AnnotPushBack(line);
			}
			{
				Line line=Line.Create(doc, new Rect( 270, 270, 570, 433 ));
				line.SetStartPoint(new Point(300, 400 ) );
				line.SetEndPoint(new Point(550, 300) );
				line.SetStartStyle(Line.EndingStyle.e_RClosedArrow);
				line.SetEndStyle(Line.EndingStyle.e_ROpenArrow);
				line.SetContents("ROpen & RClosed arrows");
				line.SetColor(new ColorPt(0, 0, 1), 3);
				line.SetInteriorColor(new ColorPt(0, 1, 0), 3);
				line.SetShowCaption(true);
				line.SetCaptionPosition( Line.CapPos.e_Top );
				line.RefreshAppearance();
				page.AnnotPushBack(line);
			}
			{
				Line line=Line.Create(doc, new Rect( 195, 395, 205, 505 ));
				line.SetStartPoint(new Point(200, 400 ) );
				line.SetEndPoint(new Point(200, 500) );
				line.RefreshAppearance();
				page.AnnotPushBack(line);
			}
			{
				Line line=Line.Create(doc, new Rect( 55, 299, 150, 301 ));
				line.SetStartPoint(new Point(55, 300 ) );
				line.SetEndPoint(new Point(155, 300) );
				line.SetStartStyle(Line.EndingStyle.e_Circle);
				line.SetEndStyle(Line.EndingStyle.e_Circle);
				line.SetContents("Caption that's longer than its line.");
				line.SetColor(new ColorPt(1, 0, 1), 3);
				line.SetInteriorColor(new ColorPt(0, 1, 0), 3);
				line.SetShowCaption(true);
				line.SetCaptionPosition( Line.CapPos.e_Top );
				line.RefreshAppearance();
				page.AnnotPushBack(line);
			}
			{
				Line line=Line.Create(doc, new Rect( 300, 200, 390, 234 ));
				line.SetStartPoint(new Point(310, 210 ) );
				line.SetEndPoint(new Point(380, 220) );
				line.SetColor(new ColorPt(0, 0, 0), 3);
				line.RefreshAppearance();
				page.AnnotPushBack(line);
			}

			Page page3 = doc.PageCreate(new Rect(0, 0, 600, 600));
			ew.Begin(page3);	// begin writing to the page
			ew.End();  // save changes to the current page
			doc.PagePushBack(page3);
			{
				Circle circle = Circle.Create(doc, new Rect( 300, 300, 390, 350 ));
				circle.SetColor(new ColorPt(0, 0, 0), 3);
				circle.RefreshAppearance();
				page3.AnnotPushBack(circle);
			}
			{
				Circle circle= Circle.Create(doc, new Rect( 100, 100, 200, 200 ));
				circle.SetColor(new ColorPt(0, 1, 0), 3);
				circle.SetInteriorColor(new ColorPt(0, 0, 1), 3);
				double[] dash = new double[2];
				dash[0]=2;dash[1]=4;
				circle.SetBorderStyle(new Annot.BorderStyle( Annot.BorderStyle.Style.e_dashed, 3, 0, 0, dash ) );
				circle.SetPadding( new Rect(2,2,2,2) );
				circle.RefreshAppearance();
				page3.AnnotPushBack(circle);
			}
			{
				Square sq = Square.Create( doc, new Rect(10,200, 80, 300 ) );
				sq.SetColor(new ColorPt(0, 0, 0), 3);
				sq.RefreshAppearance();
				page3.AnnotPushBack( sq );
			}
			{
				Square sq = Square.Create( doc, new Rect(500,200, 580, 300 ) );
				sq.SetColor(new ColorPt(1, 0, 0), 3);
				sq.SetInteriorColor(new ColorPt(0, 1, 1), 3);
				double[] dash = new double[2];
				dash[0]=4;dash[1]=2;
				sq.SetBorderStyle(new Annot.BorderStyle( Annot.BorderStyle.Style.e_dashed, 6, 0, 0, dash ) );
				sq.SetPadding( new Rect(4,4,4,4) );
				sq.RefreshAppearance();
				page3.AnnotPushBack( sq );
			}
			{
				Polygon poly = Polygon.Create(doc, new Rect(5, 500, 125, 590));
				poly.SetColor(new ColorPt(1, 0, 0), 3);
				poly.SetInteriorColor(new ColorPt(1, 1, 0), 3);
				poly.SetVertex(0, new Point(12,510) );
				poly.SetVertex(1, new Point(100,510) );
				poly.SetVertex(2, new Point(100,555) );
				poly.SetVertex(3, new Point(35,544) );
				poly.SetBorderStyle(new Annot.BorderStyle( Annot.BorderStyle.Style.e_solid, 4, 0, 0 ) );
				poly.SetPadding( new Rect(4,4,4,4) );
				poly.RefreshAppearance();
				page3.AnnotPushBack( poly );
			}
			{
				PolyLine poly = PolyLine.Create(doc, new Rect(400, 10, 500, 90));
				poly.SetColor(new ColorPt(1, 0, 0), 3);
				poly.SetInteriorColor(new ColorPt(0, 1, 0), 3);
				poly.SetVertex(0, new Point(405,20) );
				poly.SetVertex(1, new Point(440,40) );
				poly.SetVertex(2, new Point(410,60) );
				poly.SetVertex(3, new Point(470,80) );
				poly.SetBorderStyle( new Annot.BorderStyle( Annot.BorderStyle.Style.e_solid, 2, 0, 0 ) );
				poly.SetPadding( new Rect(4,4,4,4) );
				poly.SetStartStyle( Line.EndingStyle.e_RClosedArrow );
				poly.SetEndStyle( Line.EndingStyle.e_ClosedArrow );
				poly.RefreshAppearance();
				page3.AnnotPushBack( poly );
			}
			{
				Link lk = Link.Create( doc, new Rect(5,5,55,24) );
				//lk.SetColor( ColorPt(0,1,0), 3 );
				lk.RefreshAppearance();
				page3.AnnotPushBack( lk );
			}


			Page page4 = doc.PageCreate(new Rect(0, 0, 600, 600));
			ew.Begin(page4);	// begin writing to the page
			ew.End();  // save changes to the current page
			doc.PagePushBack(page4);

			{	
				ew.Begin( page4 );
				Font font = Font.Create(doc, Font.StandardType1Font.e_helvetica);
				element = eb.CreateTextBegin( font, 16 );
				element.SetPathFill(true);
				ew.WriteElement(element);
				element = eb.CreateTextRun( "Some random text on the page", font, 16 );
				element.SetTextMatrix(1, 0, 0, 1, 100, 500 );
				ew.WriteElement(element);
				ew.WriteElement( eb.CreateTextEnd() );
				ew.End();
			}
			{
				Highlight hl = Highlight.Create( doc, new Rect(100,490,150,515) );
				hl.SetColor(new ColorPt(0,1,0), 3 );
				hl.RefreshAppearance();
				page4.AnnotPushBack( hl );
			}
			{
				Squiggly sq = Squiggly.Create( doc, new Rect(100,450,250,600) );
				//sq.SetColor( ColorPt(1,0,0), 3 );
				sq.SetQuadPoint( 0, new QuadPoint(new Point( 122,455), new Point(240, 545), new Point(230, 595), new Point(101,500 ) ) );
				sq.RefreshAppearance();
				page4.AnnotPushBack( sq );
			}
			{
				Caret cr = Caret.Create( doc, new Rect(100,40,129,69) );
				cr.SetColor( new ColorPt(0,0,1), 3 );
				cr.SetSymbol( "P" );
				cr.RefreshAppearance();
				page4.AnnotPushBack( cr );
			}


			Page page5 = doc.PageCreate(new Rect(0, 0, 600, 600));
			ew.Begin(page5);	// begin writing to the page
			ew.End();  // save changes to the current page
			doc.PagePushBack(page5);
			Page page6 = doc.PageCreate(new Rect(0, 0, 600, 600));
			ew.Begin(page6);	// begin writing to the page
			ew.End();  // save changes to the current page
			doc.PagePushBack(page6);

			{
				Text txt = Text.Create( doc, new Rect( 10, 20, 30, 40 ) );
				txt.SetIcon( "UserIcon" );
				txt.SetContents( "User defined icon, unrecognized by appearance generator" );
				txt.SetColor(new ColorPt(0,1,0) );
				txt.RefreshAppearance();
				page6.AnnotPushBack( txt );
			}
			{
				Ink ink = Ink.Create( doc, new Rect( 100, 400, 200, 550 ) );
				ink.SetColor(new ColorPt(0,0,1) );
				ink.SetPoint( 1, 3, new Point( 220, 505) );
				ink.SetPoint( 1, 0, new Point( 100, 490) );
				ink.SetPoint( 0, 1, new Point( 120, 410) );
				ink.SetPoint( 0, 0, new Point( 100, 400) );
				ink.SetPoint( 1, 2, new Point( 180, 490) );
				ink.SetPoint( 1, 1, new Point( 140, 440) );		
				ink.SetBorderStyle( new Annot.BorderStyle( Annot.BorderStyle.Style.e_solid, 3, 0, 0  ) );
				ink.RefreshAppearance();
				page6.AnnotPushBack( ink );
			}


			Page page7 = doc.PageCreate(new Rect(0, 0, 600, 600));
			ew.Begin(page7);	// begin writing to the page
			ew.End();  // save changes to the current page
			doc.PagePushBack(page7);

			{
				Sound snd = Sound.Create( doc, new Rect( 100, 500, 120, 520 ) );
				snd.SetColor(  new ColorPt(1,1,0) );
				snd.SetIcon(Sound.Icon.e_Speaker );
				snd.RefreshAppearance();
				page7.AnnotPushBack( snd );
			}
			{
				Sound snd = Sound.Create( doc, new Rect( 200, 500, 220, 520 ) );
				snd.SetColor(new ColorPt(1,1,0) );
				snd.SetIcon(Sound.Icon.e_Mic );
				snd.RefreshAppearance();
				page7.AnnotPushBack( snd );
			}

			Page page8 = doc.PageCreate(new Rect(0, 0, 600, 600));
			ew.Begin(page8);	// begin writing to the page
			ew.End();  // save changes to the current page
			doc.PagePushBack(page8);

			for( int ipage =0; ipage < 2; ++ipage ) {
				double px = 5, py = 520;
				for (RubberStamp.Icon istamp = RubberStamp.Icon.e_Approved; 
					istamp <= RubberStamp.Icon.e_Draft; 
					istamp = (RubberStamp.Icon) (  (int)(istamp) + 1  ) ) {
						RubberStamp stmp = RubberStamp.Create( doc, new Rect(1,1,100,100) );
						stmp.SetIcon( istamp );
						stmp.SetContents(stmp.GetIconName());
						stmp.SetRect(new Rect(px, py, px+100, py+25 ) );
						py -= 100;
						if( py < 0 ) {
							py = 520;
							px += 200;
						}
						if( ipage == 0 ){
							//page7.AnnotPushBack( st );
							;
						}
						else {
							page8.AnnotPushBack(stmp);
							stmp.RefreshAppearance();
						}
				}
			}
			RubberStamp st = RubberStamp.Create( doc, new Rect(400,5,550,45) );
			st.SetIcon( "UserStamp" );
			st.SetContents( "User defined stamp" );
			page8.AnnotPushBack( st );
			st.RefreshAppearance();



		}


		// Relative path to the folder containing test files.
		const string input_path =  "../../../../TestFiles/";
		const string output_path = "../../../../TestFiles/Output/";

		/// <summary>
		/// The main entry point for the application.
		/// </summary>
		[System.STAThread]
		static void Main(string[] args)
		{
			PDFNet.Initialize(PDFTronLicense.Key);

			try
			{
				using (PDFDoc doc = new PDFDoc(input_path + "numbered.pdf"))
				{
					doc.InitSecurityHandler();

					// An example of using SDF/Cos API to add any type of annotations.
					AnnotationLowLevelAPI(doc);
					doc.Save(output_path + "annotation_test1.pdf", SDFDoc.SaveOptions.e_linearized);
					System.Console.WriteLine("Done. Results saved in annotation_test1.pdf");
					
					// An example of using the high-level PDFNet API to read existing annotations,
					// to edit existing annotations, and to create new annotation from scratch.
					AnnotationHighLevelAPI(doc);
					doc.Save(output_path + "annotation_test2.pdf", SDFDoc.SaveOptions.e_linearized);
					System.Console.WriteLine("Done. Results saved in annotation_test2.pdf");
				}

				// an example of creating various annotations in a brand new document
				using (PDFDoc doc1 = new PDFDoc())
				{
					CreateTestAnnots(doc1);
					doc1.Save(output_path + "new_annot_test_api.pdf", SDFDoc.SaveOptions.e_linearized);
					System.Console.WriteLine("Saved new_annot_test_api.pdf");
				}
			}
			catch (PDFNetException e)
			{
				System.Console.WriteLine(e.Message);
			}
			PDFNet.Terminate();
		}
	}
}

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