Add 160 annotation handling examples to the documentation

[agent-aspose-pdf-examples]

working-with-annotations

160 code example(s) for the working-with-annotations category.
Target: Aspose.PDF for .NET 26.4.0

Examples

#	Example	Difficulty
1	Add Text Annotation to Page 3 of PDF	beginner
2	Create Linked Popup and Highlight Annotations	intermediate
3	Add Free‑Text Annotation with Arial Font to PDF	beginner
4	Add Callout Leader Line to Free‑Text Annotation	intermediate
5	Hide FreeText Annotation on Page 5	intermediate
6	Add Yellow Highlight Annotation with Opacity	beginner
7	Set Underline Annotation Opacity to 50%	beginner
8	Add StrikeOut Annotation with Author to PDF	beginner
9	Delete Annotation by Id from PDF Page 2	intermediate
10	Remove All Annotations from a Specific PDF Page	beginner
11	Retrieve Annotations from a Specific PDF Page	beginner
12	Update Annotation Rectangle by Id in PDF	intermediate
13	Import Annotations from XFDF String 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 PDF Pages	intermediate
18	Add Figure Annotations with Custom Line Width and Color	intermediate
19	Batch Export PDF Annotations to XFDF Files	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 to CSV	beginner
24	Filter PDF Annotations by Author and Remove Others	intermediate
25	Add StrikeOut Annotation with Author to PDF	beginner
26	Generate Annotation Summary per PDF Page	intermediate
27	Add Polyline Figure Annotation to PDF	intermediate
28	Add Arrow Line Annotation to PDF	beginner
29	Import Annotations from FDF into PDF	—
30	Recolor Highlight Annotations to Light Green	beginner
31	Retrieve Annotation Bounding Rectangle	intermediate
32	Add Highlight Annotation with 70% Opacity to PDF	beginner
33	Create Popup Annotation Linked to a Sticky Note	intermediate
34	Import XFDF Annotations and Remap to Target PDF Pages	intermediate
35	Remove Popup Annotations from PDF	beginner
36	Group PDF Annotations by Type and Report Summary	intermediate
37	Add File Attachment Annotation with External Image	intermediate
38	Copy PDF Annotations via XFDF	intermediate
39	Batch Add Text Annotation to First Page of PDFs	intermediate
40	Change Color of Figure Annotation in PDF	intermediate
41	Delete PDF Annotations Using IDs from CSV	intermediate
42	Add Free‑Text Annotation with Light Gray Background	beginner
43	Set Line Thickness for Square Annotation	beginner
44	Extract Popup Annotation Text to a New PDF	intermediate
45	Add Free‑Text Annotation with Callout to PDF	intermediate
46	Export PDF Annotations to XFDF and Upload to Azure Blob Storage	intermediate
47	Annotate Table with Rounded-Corner Rectangle	intermediate
48	Retrieve Annotation IDs and Page Numbers from PDF	intermediate
49	Remove Highlight Annotations from PDF	beginner
50	Export Popup Annotations to XFDF	intermediate
...	110 more examples

Key APIs Used

Aspose.Pdf.Annotation, Aspose.Pdf.Annotations.Annotation, Aspose.Pdf.Annotations.Annotation.AnnotationType, Aspose.Pdf.Annotations.Annotation.FullName, Aspose.Pdf.Annotations.Annotation.GetRectangle, Aspose.Pdf.Annotations.Annotation.Name, Aspose.Pdf.Annotations.Annotation.PageIndex, Aspose.Pdf.Annotations.Annotation.UpdateAppearanceOnConvert, Aspose.Pdf.Annotations.AnnotationCollection, Aspose.Pdf.Annotations.AnnotationCollection.Add, Aspose.Pdf.Annotations.AnnotationCollection.Delete, Aspose.Pdf.Annotations.AnnotationCollection.FindByName, Aspose.Pdf.Annotations.AnnotationFlags, Aspose.Pdf.Annotations.AnnotationType, Aspose.Pdf.Annotations.Border, Aspose.Pdf.Annotations.BorderStyle, Aspose.Pdf.Annotations.CircleAnnotation, Aspose.Pdf.Annotations.Collection.Add, Aspose.Pdf.Annotations.CommonFigureAnnotation, Aspose.Pdf.Annotations.DefaultAppearance, Aspose.Pdf.Annotations.FdfReader, Aspose.Pdf.Annotations.FdfReader.ReadAnnotations, Aspose.Pdf.Annotations.FileAttachmentAnnotation, Aspose.Pdf.Annotations.FileHyperlink, Aspose.Pdf.Annotations.FreeTextAnnotation, Aspose.Pdf.Annotations.FreeTextIntent, Aspose.Pdf.Annotations.GoToAction, Aspose.Pdf.Annotations.GoToRemoteAction, Aspose.Pdf.Annotations.GoToURIAction, Aspose.Pdf.Annotations.HideAction
(+101 more)

Tags

3d 3d-annotation Arial Aspose Aspose.Pdf C# FDF animated-gif annotation annotations appearance arrow artifact aspdf aspect-ratio aspnet aspose aspose-pdf aspose.pdf audio

Difficulty Distribution

• beginner: 55 example(s)
• intermediate: 104 example(s)

Pipeline Stages

• Baseline (1st try): 105
• LLM Fix: 36
• Regen with KB: 15
• Pattern Fix: 3
• Final LLM Recovery: 1

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