Add 157 annotation handling examples to working-with-annotations

[agent-aspose-pdf-examples]

working-with-annotations

157 code example(s) for the working-with-annotations category.
Target: Aspose.PDF for .NET 26.8.0

Examples

#	Example	Difficulty
1	Add Text Annotation to PDF Page 3	beginner
2	Create Popup Annotation Linked to Highlight	intermediate
3	Add Free‑Text Annotation with Arial Font to PDF	beginner
4	Add Callout Leader Line to Free-Text Annotation	intermediate
5	Hide Free‑Text Annotation on a Specific PDF Page	beginner
6	Add Yellow Highlight Annotation with Opacity	beginner
7	Set Underline Annotation Opacity in PDF	beginner
8	Add Strikeout Annotation with Author to PDF	beginner
9	Delete Annotation by Id from Page Two	intermediate
10	Remove All Annotations from a PDF Page	beginner
11	List Annotation Types on a PDF Page	beginner
12	Modify Annotation Rectangle by Id in PDF	intermediate
13	Import XFDF Annotations into PDF	beginner
14	Export PDF Annotations to XFDF	beginner
15	Import Annotations from FDF into PDF	beginner
16	Batch Add Text Annotations to PDF Pages	intermediate
17	Highlight Keyword Across All PDF Pages	intermediate
18	Add Square Figure Annotations with Custom Border to Selected PDF Pages	intermediate
19	Batch Export PDF Annotations to XFDF	beginner
20	Import XFDF Annotations into Multiple PDFs in Parallel	intermediate
21	Validate XFDF Annotation Count per PDF Page	intermediate
22	Export and Re‑Import PDF Annotations via XFDF	intermediate
23	List PDF Annotation IDs and Export to CSV	beginner
24	Filter PDF Annotations by Author	intermediate
25	Add Strikethrough Annotation with Author to PDF	beginner
26	Generate Annotation Summary per PDF Page	beginner
27	Add Polyline Figure Annotation to PDF	intermediate
28	Set Arrow Line Endings on PDF Annotation	beginner
29	Import Annotations from FDF into PDF	beginner
30	Recolor Highlight Annotations to Light Green	beginner
31	Retrieve Annotation Bounding Rectangle from PDF	beginner
32	Add Highlight Annotation with 70% Opacity to PDF	beginner
33	Add Popup Annotation Linked to a Sticky Note	intermediate
34	Import XFDF Annotations and Reassign to Different PDF Pages	intermediate
35	Remove Popup Annotations from PDF	beginner
36	Group PDF Annotations by Type and Report Summary	intermediate
37	Add Figure Annotation Referencing External Image	intermediate
38	Copy PDF Annotations via XFDF	intermediate
39	Batch Add Text Annotation to First Page of PDFs	beginner
40	Change Color of Square and Circle Annotations	intermediate
41	Delete PDF Annotations Using a CSV List	intermediate
42	Set Figure Annotation Border Width	beginner
43	Extract Popup Annotations to Separate PDFs	intermediate
44	Add Free‑Text Annotation with Callout to PDF	intermediate
45	Export PDF Annotations to XFDF and Upload to Azure Blob	intermediate
46	Add Figure Annotation Around a Detected Table	intermediate
47	Retrieve Annotation IDs and Their Page Numbers	intermediate
48	Remove Highlight Annotations from PDF	beginner
49	Export Only Popup Annotations to XFDF	intermediate
50	Import Annotations from FDF into PDF	beginner
...	107 more examples

Key APIs Used

Aspose.Pdf.Annotation.PageIndex, Aspose.Pdf.Annotation.Rect, Aspose.Pdf.Annotations, Aspose.Pdf.Annotations.Annotation, Aspose.Pdf.Annotations.Annotation.AnnotationType, Aspose.Pdf.Annotations.Annotation.Characteristics, Aspose.Pdf.Annotations.Annotation.GetRectangle, Aspose.Pdf.Annotations.AnnotationCollection, Aspose.Pdf.Annotations.AnnotationCollection.Add, Aspose.Pdf.Annotations.AnnotationCollection.Clear, Aspose.Pdf.Annotations.AnnotationCollection.Delete, Aspose.Pdf.Annotations.AnnotationCollection.FindByName, Aspose.Pdf.Annotations.AnnotationFlags, Aspose.Pdf.Annotations.AnnotationType, Aspose.Pdf.Annotations.AppearanceDictionary, Aspose.Pdf.Annotations.BackgroundArtifact, Aspose.Pdf.Annotations.Border, Aspose.Pdf.Annotations.BorderStyle, Aspose.Pdf.Annotations.CircleAnnotation, Aspose.Pdf.Annotations.Collection.Add, Aspose.Pdf.Annotations.CommonFigureAnnotation, Aspose.Pdf.Annotations.Dash, Aspose.Pdf.Annotations.DefaultAppearance, Aspose.Pdf.Annotations.FdfReader, Aspose.Pdf.Annotations.FdfReader.ReadAnnotations, Aspose.Pdf.Annotations.FileAttachmentAnnotation, Aspose.Pdf.Annotations.FreeTextAnnotation, Aspose.Pdf.Annotations.GoToAction, Aspose.Pdf.Annotations.GoToRemoteAction, Aspose.Pdf.Annotations.GoToURIAction
(+111 more)

Tags

3D annotation 3d 3d-annotation Arial Aspose Aspose.Pdf C# FDF PDF U3D alignment animated-gif annotation annotations appearance arrow artifact aspdf aspect-ratio aspose

Difficulty Distribution

• beginner: 64 example(s)
• intermediate: 93 example(s)

Pipeline Stages

• Baseline (1st try): 106
• LLM Fix: 34
• Regen with KB: 13
• Pattern Fix: 3
• Final LLM Recovery: 1

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